http://dewey.info/scheme/e22/
500
Naturwissenschaften und Mathematik
500
Naturwissenschaften
500
Naturwissenschaften und Mathematik
501
Philosophie, Theorie
502
Verschiedenes
503
Wörterbücher, Enzyklopädien
505
Fortlaufende Sammelwerke
506
Organisationen, Management
507
Ausbildung, Forschung, verwandte Themen
508
Naturgeschichte
509
Histor., geogr., personenbezogene Behandlung
Dewey Decimal Classification
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