Classification
900 - History & geography
1,401
320 - Political science
804
300 - Social sciences
584
700 - The arts; fine & decorative arts
495
330 - Economics
436
100 - Philosophy & psychology
374
800 - Literature & rhetoric
311
200 - Religion
265
140 - Specific philosophical schools
257
301 - Sociology & anthropology
248
370 - Education
244
333 - Economics of land & energy
229
400 - Language
225
340 - Law
220
600 - Technology
216
410 - Linguistics
192
363 - Other social problems & services
179
380 - Commerce, communications & transportation
174
610 - Medicine & health
124
620 - Engineering & allied operations
122
000 - Computer science, information & general works
119
304 - Factors affecting social behavior
103
720 - Architecture
88
780 - Music
87
170 - Ethics
85
297 - Islam, Babism & Bahai Faith
77
581 - Specific topics in natural history
63
500 - Natural sciences & mathematics
59
630 - Agriculture & related technologies
59
551 - Geology, hydrology & meteorology
56
296 - Judaism
49
576 - Genetics & evolution
48
530 - Physics
40
361 - Social problems & social welfare in general
38
364 - Criminology
36
414 - Phonology & phonetics
36
350 - Public administration & military science
35
120 - Epistemology, causation & humankind
25
770 - Photography, photographs & computer art
23
791 - Public performances
21
360 - Social problems & services; associations
19
580 - Plants (Botany)
15
398 - Folklore
11
658 - General management
9
520 - Astronomy & allied sciences
8
540 - Chemistry & allied sciences
8
160 - Logic
7
590 - Animals (Zoology)
5
920 - Biography, genealogy & insignia
5
550 - Earth sciences
4
more ...