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Wikipedia:Dewey Decimal System/54
Dewey Decimal System
>
5 Natural Sciences and Mathematics
>
54 Chemistry
540 Chemistry[?]
541 Physical chemistry theoretical chemistry[?]
542 Techniques, equipment, materials[?]
543 Analytical chemistry[?]
544 Qualitative analysis[?]
545 Quantitative analysis[?]
546 Inorganic chemistry[?]
547 Organic chemistry[?]
548 Crystallography[?]
549 Mineralogy[?]
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