Classification
370 - Education
2,781
300 - Social sciences
579
700 - The arts; fine & decorative arts
576
100 - Philosophy & psychology
548
900 - History & geography
543
333 - Economics of land & energy
471
320 - Political science
418
610 - Medicine & health
418
600 - Technology
404
330 - Economics
310
400 - Language
296
000 - Computer science, information & general works
280
140 - Specific philosophical schools
268
380 - Commerce, communications & transportation
246
363 - Other social problems & services
244
500 - Natural sciences & mathematics
181
620 - Engineering & allied operations
167
340 - Law
142
410 - Linguistics
131
200 - Religion
112
304 - Factors affecting social behavior
110
800 - Literature & rhetoric
105
301 - Sociology & anthropology
98
170 - Ethics
96
530 - Physics
91
780 - Music
83
551 - Geology, hydrology & meteorology
62
720 - Architecture
62
576 - Genetics & evolution
52
581 - Specific topics in natural history
46
580 - Plants (Botany)
45
658 - General management
42
361 - Social problems & social welfare in general
41
540 - Chemistry & allied sciences
36
630 - Agriculture & related technologies
36
297 - Islam, Babism & Bahai Faith
35
360 - Social problems & services; associations
22
120 - Epistemology, causation & humankind
20
414 - Phonology & phonetics
19
770 - Photography, photographs & computer art
16
657 - Accounting
15
364 - Criminology
13
612 - Human physiology
13
350 - Public administration & military science
11
615 - Pharmacology & therapeutics
10
520 - Astronomy & allied sciences
8
791 - Public performances
8
296 - Judaism
7
336 - Public finance
5
398 - Folklore
5
more ...