Classification
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363 - Other social problems & services
9
548 - Crystallography
9
547 - Organic chemistry
8
550 - Earth sciences
8
617 - Surgery & related medical specialties
7
507 - Education, research & related topics
6
062 - Organizations in British Isles; in England
5
153 - Mental processes & intelligence
5
380 - Commerce, communications & transportation
5
624 - Civil engineering
5
005 - Computer programming, programs & data
4
301 - Sociology & anthropology
4
370 - Education
4
549 - Mineralogy
4
577 - Ecology
4
670 - Manufacturing
4
745 - Decorative arts
4
800 - Literature & rhetoric
4
150 - Psychology
3
303 - Social processes
3
332 - Financial economics
3
340 - Law
3
414 - Phonology & phonetics
3
533 - Gas mechanics
3
613 - Personal health & safety
3
615 - Pharmacology & therapeutics
3
040 - [Unassigned]
2
063 - Organizations in central Europe; in Germany
2
109 - Historical & collected persons treatment
2
110 - Metaphysics
2
120 - Epistemology, causation & humankind
2
128 - Humankind
2
140 - Specific philosophical schools
2
160 - Logic
2
200 - Religion
2
210 - Philosophy & theory of religion
2
331 - Labor economics
2
338 - Production
2
384 - Communications; telecommunication
2
400 - Language
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
614 - Incidence & prevention of disease
2
630 - Agriculture & related technologies
2
641 - Food & drink
2
658 - General management
2
664 - Food technology
2
780 - Music
2
930 - History of ancient world to ca. 499
2
057 - Serials in Slavic languages
1
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