Classification
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509 - Historical, geographic & persons treatment
5
510 - Mathematics
5
531 - Classical mechanics; solid mechanics
5
613 - Personal health & safety
5
618 - Gynecology, obstetrics, pediatrics & geriatrics
5
062 - Organizations in British Isles; in England
4
338 - Production
4
370 - Education
4
507 - Education, research & related topics
4
581 - Specific topics in natural history
4
614 - Incidence & prevention of disease
4
658 - General management
4
670 - Manufacturing
4
005 - Computer programming, programs & data
3
304 - Factors affecting social behavior
3
414 - Phonology & phonetics
3
511 - General principles of mathematics
3
512 - Algebra
3
518 - Numerical analysis
3
538 - Magnetism
3
550 - Earth sciences
3
590 - Animals (Zoology)
3
629 - Other branches of engineering
3
640 - Home & family management
3
720 - Architecture
3
800 - Literature & rhetoric
3
820 - English & Old English literatures
3
930 - History of ancient world to ca. 499
3
004 - Data processing & computer science
2
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
306 - Culture & institutions
2
346 - Private law
2
523 - Specific celestial bodies & phenomena
2
534 - Sound & related vibrations
2
631 - Techniques, equipment & materials
2
632 - Plant injuries, diseases & pests
2
634 - Orchards, fruits & forestry
2
662 - Explosives, fuels & related products
2
668 - Technology of other organic products
2
745 - Decorative arts
2
016 - Bibliographies of works on specific subjects
1
100 - Philosophy & psychology
1
110 - Metaphysics
1
128 - Humankind
1
170 - Ethics
1
174 - Occupational ethics
1
192 - Philosophy of British Isles
1
302 - Social interaction
1
331 - Labor economics
1
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