Classification
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414 - Phonology & phonetics
3
520 - Astronomy & allied sciences
3
174 - Occupational ethics
2
179 - Other ethical norms
2
230 - Christianity & Christian theology
2
303 - Social processes
2
307 - Communities
2
339 - Macroeconomics & related topics
2
350 - Public administration & military science
2
364 - Criminology
2
381 - Commerce
2
614 - Incidence & prevention of disease
2
628 - Sanitary & municipal engineering
2
120 - Epistemology, causation & humankind
1
153 - Mental processes & intelligence
1
240 - Christian moral & devotional theology
1
250 - Christian orders & local church
1
253 - Pastoral office & work
1
260 - Social & ecclesiastical theology
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
323 - Civil & political rights
1
327 - International relations
1
332 - Financial economics
1
372 - Elementary education
1
510 - Mathematics
1
515 - Analysis
1
531 - Classical mechanics; solid mechanics
1
537 - Electricity & electronics
1
570 - Life sciences; biology
1
616 - Diseases
1
621 - Applied physics
1
623 - Military & nautical engineering
1
627 - Hydraulic engineering
1
646 - Sewing, clothing & personal living
1
657 - Accounting
1
661 - Industrial chemicals
1
670 - Manufacturing
1
724 - Architecture from 1400
1
745 - Decorative arts
1
781 - General principles & musical forms
1
791 - Public performances
1
792 - Stage presentations
1
910 - Geography & travel
1
942 - England & Wales
1
970 - History of North America
1
973 - United States
1