Classification
616 - Diseases
68
610 - Medicine & health
50
330 - Economics
36
617 - Surgery & related medical specialties
33
340 - Law
31
820 - English & Old English literatures
26
320 - Political science
17
005 - Computer programming, programs & data
15
004 - Data processing & computer science
14
006 - Special computer methods
13
618 - Gynecology, obstetrics, pediatrics & geriatrics
10
658 - General management
9
331 - Labor economics
8
613 - Personal health & safety
8
614 - Incidence & prevention of disease
7
621 - Applied physics
7
338 - Production
6
370 - Education
6
570 - Life sciences; biology
6
620 - Engineering & allied operations
6
378 - Higher education
5
530 - Physics
5
612 - Human physiology
5
615 - Pharmacology & therapeutics
5
280 - Christian denominations & sects
4
300 - Social sciences
4
301 - Sociology & anthropology
4
304 - Factors affecting social behavior
4
515 - Analysis
4
670 - Manufacturing
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
150 - Psychology
3
170 - Ethics
3
306 - Culture & institutions
3
327 - International relations
3
500 - Natural sciences & mathematics
3
520 - Astronomy & allied sciences
3
571 - Physiology & related subjects
3
590 - Animals (Zoology)
3
780 - Music
3
025 - Library operations
2
100 - Philosophy & psychology
2
174 - Occupational ethics
2
190 - Modern western philosophy
2
332 - Financial economics
2
333 - Economics of land & energy
2
341 - Law of nations
2
371 - Schools & their activities; special education
2
380 - Commerce, communications & transportation
2
more ...