Classification
330 - Economics
752
155 - Differential & developmental psychology
479
658 - General management
425
158 - Applied psychology
375
610 - Medicine & health
362
340 - Law
337
332 - Financial economics
311
339 - Macroeconomics & related topics
261
320 - Political science
259
302 - Social interaction
239
650 - Management & auxiliary services
217
004 - Data processing & computer science
190
370 - Education
188
700 - The arts; fine & decorative arts
182
150 - Psychology
175
820 - English & Old English literatures
157
000 - Computer science, information & general works
149
300 - Social sciences
149
616 - Diseases
142
900 - History & geography
142
333 - Economics of land & energy
133
100 - Philosophy & psychology
119
140 - Specific philosophical schools
108
005 - Computer programming, programs & data
95
153 - Mental processes & intelligence
95
600 - Technology
95
331 - Labor economics
86
363 - Other social problems & services
85
301 - Sociology & anthropology
76
500 - Natural sciences & mathematics
74
380 - Commerce, communications & transportation
66
170 - Ethics
61
620 - Engineering & allied operations
60
306 - Culture & institutions
53
338 - Production
51
384 - Communications; telecommunication
41
400 - Language
40
006 - Special computer methods
39
200 - Religion
39
576 - Genetics & evolution
36
570 - Life sciences; biology
34
361 - Social problems & social welfare in general
32
381 - Commerce
29
303 - Social processes
26
305 - Social groups
26
800 - Literature & rhetoric
26
580 - Plants (Botany)
25
612 - Human physiology
25
940 - History of Europe
25
970 - History of North America
24
more ...