Classification
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492 - Afro-Asiatic languages; Semitic languages
1
499 - Austronesian & other languages
1
501 - Philosophy & theory
1
509 - Historical, geographic & persons treatment
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
547 - Organic chemistry
1
570 - Life sciences; biology
1
572 - Biochemistry
1
580 - Plants (Botany)
1
598 - Birds
1
610 - Medicine & health
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
641 - Food & drink
1
650 - Management & auxiliary services
1
664 - Food technology
1
770 - Photography, photographs & computer art
1
809 - History, description & criticism
1
839 - Other Germanic literatures
1
901 - Philosophy & theory
1
907 - Education, research & related topics
1
909 - World history
1
940 - History of Europe
1
947 - Eastern Europe; Russia
1
950 - History of Asia; Far East
1