Classification
330 - Economics
314
320 - Political science
222
820 - English & Old English literatures
167
900 - History & geography
138
300 - Social sciences
97
333 - Economics of land & energy
83
616 - Diseases
83
006 - Special computer methods
81
200 - Religion
71
340 - Law
71
610 - Medicine & health
70
370 - Education
68
363 - Other social problems & services
64
005 - Computer programming, programs & data
62
304 - Factors affecting social behavior
62
933 - Palestine to 70
62
515 - Analysis
61
296 - Judaism
52
600 - Technology
50
780 - Music
49
940 - History of Europe
49
004 - Data processing & computer science
48
306 - Culture & institutions
47
658 - General management
45
336 - Public finance
40
577 - Ecology
38
621 - Applied physics
36
571 - Physiology & related subjects
35
551 - Geology, hydrology & meteorology
34
327 - International relations
33
530 - Physics
33
301 - Sociology & anthropology
32
305 - Social groups
32
338 - Production
31
500 - Natural sciences & mathematics
31
700 - The arts; fine & decorative arts
28
510 - Mathematics
27
620 - Engineering & allied operations
27
956 - Middle East (Near East)
25
572 - Biochemistry
24
630 - Agriculture & related technologies
24
001 - Knowledge
23
541 - Physical chemistry
22
910 - Geography & travel
22
380 - Commerce, communications & transportation
21
100 - Philosophy & psychology
17
930 - History of ancient world to ca. 499
17
155 - Differential & developmental psychology
16
230 - Christianity & Christian theology
16
297 - Islam, Babism & Bahai Faith
16
more ...