Classification
333 - Economics of land & energy
370 - Education
364
700 - The arts; fine & decorative arts
159
330 - Economics
126
363 - Other social problems & services
105
610 - Medicine & health
104
600 - Technology
103
320 - Political science
100
900 - History & geography
99
000 - Computer science, information & general works
77
100 - Philosophy & psychology
74
380 - Commerce, communications & transportation
70
140 - Specific philosophical schools
67
620 - Engineering & allied operations
63
300 - Social sciences
57
500 - Natural sciences & mathematics
42
551 - Geology, hydrology & meteorology
38
400 - Language
33
580 - Plants (Botany)
20
581 - Specific topics in natural history
20
576 - Genetics & evolution
19
800 - Literature & rhetoric
19
720 - Architecture
18
170 - Ethics
17
340 - Law
17
630 - Agriculture & related technologies
17
304 - Factors affecting social behavior
14
658 - General management
14
530 - Physics
13
410 - Linguistics
12
540 - Chemistry & allied sciences
12
780 - Music
12
200 - Religion
10
301 - Sociology & anthropology
8
120 - Epistemology, causation & humankind
6
361 - Social problems & social welfare in general
6
657 - Accounting
6
350 - Public administration & military science
5
414 - Phonology & phonetics
5
297 - Islam, Babism & Bahai Faith
4
336 - Public finance
4
770 - Photography, photographs & computer art
4
360 - Social problems & services; associations
2
520 - Astronomy & allied sciences
2
398 - Folklore
1
550 - Earth sciences
1
590 - Animals (Zoology)
1
612 - Human physiology
1
650 - Management & auxiliary services
1
791 - Public performances
1