Classification
363 - Other social problems & services
620 - Engineering & allied operations
900 - History & geography
600 - Technology
332
700 - The arts; fine & decorative arts
171
333 - Economics of land & energy
162
330 - Economics
86
380 - Commerce, communications & transportation
72
000 - Computer science, information & general works
58
580 - Plants (Botany)
54
610 - Medicine & health
53
551 - Geology, hydrology & meteorology
49
140 - Specific philosophical schools
42
320 - Political science
31
576 - Genetics & evolution
29
720 - Architecture
29
370 - Education
25
630 - Agriculture & related technologies
21
581 - Specific topics in natural history
19
800 - Literature & rhetoric
19
540 - Chemistry & allied sciences
18
340 - Law
16
500 - Natural sciences & mathematics
15
414 - Phonology & phonetics
13
658 - General management
12
300 - Social sciences
10
400 - Language
10
304 - Factors affecting social behavior
8
100 - Philosophy & psychology
5
170 - Ethics
5
297 - Islam, Babism & Bahai Faith
3
530 - Physics
3
770 - Photography, photographs & computer art
3
200 - Religion
2
301 - Sociology & anthropology
2
410 - Linguistics
2
612 - Human physiology
2
120 - Epistemology, causation & humankind
1
360 - Social problems & services; associations
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1