Classification
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003 - Systems
1
120 - Epistemology, causation & humankind
1
160 - Logic
1
355 - Military science
1
502 - Miscellany
1
519 - Probabilities & applied mathematics
1
529 - Chronology
1
538 - Magnetism
1
539 - Modern physics
1
581 - Specific topics in natural history
1
604 - Special topics
1
612 - Human physiology
1
628 - Sanitary & municipal engineering
1
664 - Food technology
1
665 - Industrial oils, fats, waxes & gases
1
667 - Cleaning, color & coating technologies
1
670 - Manufacturing
1
780 - Music
1