Classification
600 - Technology
1,367
658 - General management
224
005 - Computer programming, programs & data
190
330 - Economics
190
900 - History & geography
139
006 - Special computer methods
104
331 - Labor economics
92
320 - Political science
88
300 - Social sciences
81
500 - Natural sciences & mathematics
78
100 - Philosophy & psychology
71
340 - Law
71
338 - Production
69
620 - Engineering & allied operations
63
200 - Religion
53
302 - Social interaction
52
370 - Education
52
333 - Economics of land & energy
46
700 - The arts; fine & decorative arts
46
004 - Data processing & computer science
41
000 - Computer science, information & general works
36
305 - Social groups
34
610 - Medicine & health
32
800 - Literature & rhetoric
32
650 - Management & auxiliary services
31
384 - Communications; telecommunication
29
140 - Specific philosophical schools
28
380 - Commerce, communications & transportation
28
153 - Mental processes & intelligence
27
301 - Sociology & anthropology
27
306 - Culture & institutions
27
363 - Other social problems & services
25
332 - Financial economics
24
303 - Social processes
23
304 - Factors affecting social behavior
22
362 - Social welfare problems & services
22
158 - Applied psychology
20
374 - Adult education
20
621 - Applied physics
19
791 - Public performances
19
170 - Ethics
18
381 - Commerce
18
519 - Probabilities & applied mathematics
18
364 - Criminology
17
745 - Decorative arts
17
570 - Life sciences; biology
16
400 - Language
15
657 - Accounting
15
670 - Manufacturing
15
378 - Higher education
13
more ...