Classification
600 - Technology
1,370
005 - Computer programming, programs & data
209
658 - General management
193
006 - Special computer methods
188
900 - History & geography
139
320 - Political science
112
330 - Economics
101
621 - Applied physics
98
340 - Law
96
000 - Computer science, information & general works
88
004 - Data processing & computer science
72
100 - Philosophy & psychology
71
370 - Education
68
300 - Social sciences
67
620 - Engineering & allied operations
67
331 - Labor economics
61
333 - Economics of land & energy
58
338 - Production
56
200 - Religion
54
304 - Factors affecting social behavior
52
700 - The arts; fine & decorative arts
48
306 - Culture & institutions
43
500 - Natural sciences & mathematics
43
305 - Social groups
42
363 - Other social problems & services
42
616 - Diseases
41
302 - Social interaction
39
570 - Life sciences; biology
37
610 - Medicine & health
37
301 - Sociology & anthropology
36
003 - Systems
32
800 - Literature & rhetoric
30
140 - Specific philosophical schools
29
380 - Commerce, communications & transportation
28
530 - Physics
26
551 - Geology, hydrology & meteorology
26
617 - Surgery & related medical specialties
25
332 - Financial economics
24
362 - Social welfare problems & services
24
381 - Commerce
24
374 - Adult education
23
519 - Probabilities & applied mathematics
22
303 - Social processes
21
327 - International relations
21
629 - Other branches of engineering
21
170 - Ethics
18
364 - Criminology
18
745 - Decorative arts
18
791 - Public performances
18
001 - Knowledge
17
more ...