500 Naturwissenschaften und Mathematik
540 Chemie
540 Chemie und zugeordnete Wissenschaften 541 Physikalische Chemie 542 Techniken, Ausstattung, Materialien 543 Analytische Chemie 546 Anorganische Chemie 547 Organische Chemie 548 Kristallografie 549 Mineralogie
Dewey Decimal Classification
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