540 Chemistry
[545] [Unassigned] fr
540 Chimie
[545] [Vacant] es
540 Química
[545] [No asignado] sv
540 Kemi
[545] [Vakant] pt
540 Química
[545] [Não assinalado] ru
540 Химия
[545] [Не используется] zh
540 化学
[545] [Unassigned 未指定数位] ar
540 الكيمياء.
[545] (لم يخصص بعد). af
540 Chemie
[545] [Nie toegeken nie] no
540 Kjemi
[545] Ubenyttet de
540 Chemie
[545] [Unbesetzt] gd
540 Ceimigeachd
[545] Bàn
Dewey Decimal Classification
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