Classification
700 - The arts; fine & decorative arts
659
600 - Technology
643
610 - Medicine & health
609
900 - History & geography
554
620 - Engineering & allied operations
484
000 - Computer science, information & general works
451
333 - Economics of land & energy
404
800 - Literature & rhetoric
270
363 - Other social problems & services
257
540 - Chemistry & allied sciences
197
140 - Specific philosophical schools
195
580 - Plants (Botany)
190
330 - Economics
167
380 - Commerce, communications & transportation
166
576 - Genetics & evolution
131
100 - Philosophy & psychology
111
320 - Political science
108
500 - Natural sciences & mathematics
92
530 - Physics
83
300 - Social sciences
81
612 - Human physiology
74
630 - Agriculture & related technologies
67
581 - Specific topics in natural history
66
400 - Language
65
340 - Law
60
615 - Pharmacology & therapeutics
57
370 - Education
54
304 - Factors affecting social behavior
53
414 - Phonology & phonetics
51
410 - Linguistics
46
551 - Geology, hydrology & meteorology
44
200 - Religion
36
720 - Architecture
34
301 - Sociology & anthropology
31
170 - Ethics
28
658 - General management
21
361 - Social problems & social welfare in general
18
120 - Epistemology, causation & humankind
16
780 - Music
16
297 - Islam, Babism & Bahai Faith
8
770 - Photography, photographs & computer art
7
160 - Logic
6
791 - Public performances
6
350 - Public administration & military science
3
364 - Criminology
3
590 - Animals (Zoology)
3
650 - Management & auxiliary services
3
296 - Judaism
2
398 - Folklore
2
550 - Earth sciences
2
more ...