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Naturvitenskap
Astronomi
Astronomi
Teknikker, arbeidsmetoder, apparater, utstyr, materialer
Praktisk astronomi
[Ubenyttet]
Preferred term
522.4
[Ubenyttet]
Broader concept
522.1-522.6
Praktisk astronomi
Identifier
ocd00145912
Notation
522.4
URI
http://dewey.info/class/522.4/e23/
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Created 2/4/10, last modified 8/20/25