search

Search the National Library's catalog - books, newspapers, journals, photos, maps, music, manuscripts, radio/TV and more, both physical and digitized. Digitized text (OCR) is matched too by default, so a query can surface newspaper or book pages that mention a term even when it's not in the title.

Signature: search(q: string, required; media_type: string, optional, default None; language: string, optional, default None; county: string, optional, default None; year_from: integer, optional, default None; year_to: integer, optional, default None; digital_only: yes/no, optional, default False; sort: string, optional, default None; page: integer, optional, default 0; size: integer, optional, default 10; limit: integer, items, optional, default 25; offset: integer, items, optional, default 0)

Direct GET

For navigating agents: open the HTML page with parameters in the URL. The result is fetched and displayed without screenshots or form filling.

Open this validated HTML GET URL

https://allemannsdata.com/wiki/kilder/nasjonalbiblioteket/search/?q={q}&media_type={media_type}&language={language}&county={county}&year_from={year_from}&year_to={year_to}&digital_only=false&sort={sort}&page=0&size=10&limit=25&offset=0

Replace {q}, {media_type}, {language}, {county}, {year_from}, {year_to}, {digital_only}, {sort}, {page}, {size} with values. Remove unused optional parameters from the URL.

For software and dashboards: Read the operation descriptor. The JSON GET template is https://allemannsdata.com/wiki/api/v1/kilder/nasjonalbiblioteket/search?q={q}&media_type={media_type}&language={language}&county={county}&year_from={year_from}&year_to={year_to}&digital_only=false&sort={sort}&page=0&size=10&limit=25&offset=0. Open this exact request as JSON.

Parameter	Requirement	JSON type	Description
`q`	required	string	Free-text query. Supports field-restricted terms too, e.g. "subject:fiske year:1970" combined with free text.
`media_type`	optional	union	Restrict to one type, e.g. aviser (newspapers), bøker (books), tidsskrift (journals), bilder (photos), musikk, kart (maps), film, plakater (posters), noter (sheet music), radio, fjernsyn. See get_aggregations(q="*", group_by="mediatype") for the full list with counts.
`language`	optional	union	Language filter - values are inconsistent in the catalog (mixes codes like "nob" and labels like "Norsk bokmål"); check get_aggregations(q=q, group_by="languages") first if unsure.
`county`	optional	union	Norwegian county name, e.g. "Troms", "Oslo".
`year_from`	optional	union	Restrict to items published/issued in this year range (inclusive).
`year_to`	optional	union	Restrict to items published/issued in this year range (inclusive).
`digital_only`	optional	boolean	Only items that have been digitized.
`sort`	optional	union	One of date, title, otherid, firstDigitalContentTime, optionally suffixed ",desc" (default: relevance).
`page`	optional	integer	Zero-based page index.
`size`	optional	integer	Results per page, 1 to 100 (default 10).
`limit`	optional	integer	Gateway page size; default 25, maximum 100.
`offset`	optional	integer	Number of list items to skip; default 0.

Generated JavaScript, Python and response structure

Use JSON when the user requests code, machine-readable data, value extraction or further computation. Use the HTML GET page to identify the correct source and verify parameters.

Example for generated JavaScript and Python

https://allemannsdata.com/wiki/api/v1/kilder/nasjonalbiblioteket/search?q={q}&media_type={media_type}&language={language}&county={county}&year_from={year_from}&year_to={year_to}&digital_only=false&sort={sort}&page=0&size=10&limit=25&offset=0

Replace URL placeholders and remove unused optional parameters.

JavaScript in a dashboard

const url = "https://allemannsdata.com/wiki/api/v1/kilder/nasjonalbiblioteket/search?q={q}&media_type={media_type}&language={language}&county={county}&year_from={year_from}&year_to={year_to}&digital_only=false&sort={sort}&page=0&size=10&limit=25&offset=0";
const response = await fetch(url);
if (!response.ok) {
  const failure = await response.json();
  throw new Error(`${failure.error.code}: ${failure.error.message} ${failure.suggestion}`);
}
const result = await response.json();
const data = result.data;

Python without additional packages

import json
from urllib.request import urlopen

url = "https://allemannsdata.com/wiki/api/v1/kilder/nasjonalbiblioteket/search?q={q}&media_type={media_type}&language={language}&county={county}&year_from={year_from}&year_to={year_to}&digital_only=false&sort={sort}&page=0&size=10&limit=25&offset=0"
with urlopen(url) as response:
    result = json.load(response)
data = result["data"]

Response structure

{
  "source": "nasjonalbiblioteket",
  "operation": "search",
  "parameters": {},
  "data": {},
  "entities": [],
  "_meta": {"retrieved_at": "...", "sources": [], "cache": {}},
  "_links": {"self": "...", "source": "...", "wiki": "...", "feedback": "..."}
}

Form for manual use

The form is a fallback for people and browser agents that cannot open the GET URL directly.

q (required) Type: string. Free-text query. Supports field-restricted terms too, e.g. "subject:fiske year:1970" combined with free text.

media_type Type: string. Restrict to one type, e.g. aviser (newspapers), bøker (books), tidsskrift (journals), bilder (photos), musikk, kart (maps), film, plakater (posters), noter (sheet music), radio, fjernsyn. See get_aggregations(q="*", group_by="mediatype") for the full list with counts.

language Type: string. Language filter - values are inconsistent in the catalog (mixes codes like "nob" and labels like "Norsk bokmål"); check get_aggregations(q=q, group_by="languages") first if unsure.

county Type: string. Norwegian county name, e.g. "Troms", "Oslo".

year_from Type: integer. Restrict to items published/issued in this year range (inclusive).

year_to Type: integer. Restrict to items published/issued in this year range (inclusive).

digital_only Type: yes/no. Only items that have been digitized.

sort Type: string. One of date, title, otherid, firstDigitalContentTime, optionally suffixed ",desc" (default: relevance).

page Type: integer. Zero-based page index.

size Type: integer. Results per page, 1 to 100 (default 10).

Result

Source: National Library of Norway. Retrieved 2026-09-26T20:48:14Z in 0.188 seconds.

total:

81723

page:

size:

items:

10 results

id:
4ac85a47eb7bdbf652bf6d0da5168b23
urn:
URN:NBN:no-nb_digibok_2008021200052
title:
Ultrasound in the diagnosis of developmental dysplasia ofthe hip in newborns
creators:
1 results
1. Rosendahl, Karen
year:
1995
publisher:
University of Bergen, Departments of Pediatrics and Radiology, Haukeland Hospital
media_types:
1 results
1. bøker
languages:
1 results
1. eng
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2008021200052_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/4ac85a47eb7bdbf652bf6d0da5168b23
id:
184620b52ca718a9319bfecbc62f8445
urn:
URN:NBN:no-nb_digibok_2007112904095
title:
Hva sier markedet? : veiledning i gjennomføring av markedsundersøkelser
creators:
1 results
1. Rosendahl, Tom
year:
1992
publisher:
Cappelen
media_types:
1 results
1. bøker
languages:
1 results
1. nob
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2007112904095_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/184620b52ca718a9319bfecbc62f8445
id:
33ec6c54b212574f0b21b0d20f9a6390
urn:
URN:NBN:no-nb_digibok_2011011706095
title:
Undersøkelser over kulhydratømfintligheten efter kulhydratfattig kost
creators:
1 results
1. Rosendahl, Carl
year:
1934
publisher:
[s.n.]
media_types:
1 results
1. bøker
languages:
1 results
1. nob
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2011011706095_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/33ec6c54b212574f0b21b0d20f9a6390
id:
e66f327bab40ec20c79423888e8dded1
urn:
URN:NBN:no-nb_digibok_2011082208030
title:
Nærhet og erfaring skaper lokaltilpasset reklame : en studie av internasjonale annonsørers reklametilpasninger i norske massemedier
creators:
1 results
1. Rosendahl, Tom
year:
1997
publisher:
BAS
media_types:
1 results
1. bøker
languages:
1 results
1. nob
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2011082208030_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/e66f327bab40ec20c79423888e8dded1
id:
e4eafae3d7094feef6d50c440c5b25cf
urn:
URN:NBN:no-nb_digibok_2021053148529
title:
En Soldat fra den store nordiske Krig, Oberstløjtnant Ole Holck og hans Hustru Elen Rosendahl
creators:
1 results
1. Holck, Harald
year:
1949
publisher:
not reported by source
media_types:
1 results
1. bøker
languages:
3 results
1. dan
2. nob
3. mul
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2021053148529_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/e4eafae3d7094feef6d50c440c5b25cf
id:
34a392af0974820f299b25ed0416d689
urn:
URN:NBN:no-nb_pliktmonografi_000077898
title:
De norske krigsseilernes historie – en kunnskapsstatus = : Status of Knowledge of the Wartime Seafarers’ History
creators:
1 results
1. Rosendahl, Bjørn Tore
year:
2025
publisher:
Universitetsforlaget
media_types:
1 results
1. artikler
languages:
1 results
1. nor
county:
not reported by source
digital:
yes
public_domain:
no
license:
copyrighted
viewability:
NONE
access_allowed_from:
NB
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_pliktmonografi_000077898_0001/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/34a392af0974820f299b25ed0416d689
id:
5cec836f7d40456ddd25f5e8dcfeb1e2
urn:
URN:NBN:no-nb_pliktmonografi_000085387
title:
Norske og utenlandske krigsseilere i samme båt: Det som splittet og det som bandt = : Norwegian and foreign seafarers in the same boat during World War Two: What divided and what united them
creators:
1 results
1. Rosendahl, Bjørn Tore
year:
2022
publisher:
Universitetsforlaget
media_types:
1 results
1. artikler
languages:
1 results
1. nor
county:
not reported by source
digital:
yes
public_domain:
no
license:
copyrighted
viewability:
NONE
access_allowed_from:
NB
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_pliktmonografi_000085387_0001/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/5cec836f7d40456ddd25f5e8dcfeb1e2
id:
5f0d9e8ee00faa8cc77a20c1e6b4e4a3
urn:
URN:NBN:no-nb_digibok_2012030508171
title:
Brev
creators:
3 results
1. Ekelöf, Maja
2. Werenskiold, Nils
3. Rosendahl, Tony
year:
1973
publisher:
Tiden
media_types:
1 results
1. bøker
languages:
1 results
1. nob
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2012030508171_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/5f0d9e8ee00faa8cc77a20c1e6b4e4a3
id:
2548f6ce538d98cc745f72aa2469aa63
urn:
URN:NBN:no-nb_digibok_2016042708345
title:
Industrial benefits and costs of greenhouse gas abatement strategies : applications of E3ME : Modelling external secondary benefits in the E3ME model
creators:
1 results
1. Rosendahl, Knut Einar
year:
2000
publisher:
Statistics Norway
media_types:
1 results
1. bøker
languages:
1 results
1. eng
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2016042708345_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/2548f6ce538d98cc745f72aa2469aa63
id:
713fa3a8e011d790ebf6e4e7b401114a
urn:
URN:NBN:no-nb_digibok_2016071108162
title:
Cost-effective environmental policy : implications of induced technological change
creators:
1 results
1. Rosendahl, Knut Einar
year:
2002
publisher:
Statistics Norway, Research Department
media_types:
1 results
1. bøker
languages:
1 results
1. eng
county:
not reported by source
digital:
yes
public_domain:
no
license:
bokhylla
viewability:
NONE
access_allowed_from:
NORWAY
thumbnail:
https://www.nb.no/services/image/resolver/URN:NBN:no-nb_digibok_2016071108162_C1/full/0,128/0/native.jpg
viewer_url:
https://www.nb.no/items/713fa3a8e011d790ebf6e4e7b401114a

limit:

offset:

returned:

has_more_results:

yes

truncated:

yes

next_offset:

Will you use the result in generated code?

Open the same result as JSON

Is data missing or incorrect? Send feedback about this result.

Continue exploring

How an AI agent should use this page

Ground rule: Navigate with HTML GET links to keep explanations and relationships. Use the page's JSON alternative only when concrete values must be extracted, compared or computed.

How to use the search lookup

Replace the placeholders in the HTML GET template; remove optional parameters you do not need.
Check types, units, limits and ID formats in the parameter table.
Follow linked results to canonical pages before combining sources.

Misreading to avoid: An empty list means "no results for this lookup". An error message or unavailable source does not mean the data does not exist.

Source-specific next step

Go to the source page for other operations. Use the JSON template only after the HTML result shows that the parameters and source are correct.

AI agent? Read the complete navigation and programming guide.