Classification
580 - Plants (Botany)
620 - Engineering & allied operations
600 - Technology
277
700 - The arts; fine & decorative arts
170
900 - History & geography
170
333 - Economics of land & energy
138
363 - Other social problems & services
101
610 - Medicine & health
99
630 - Agriculture & related technologies
95
000 - Computer science, information & general works
94
330 - Economics
62
380 - Commerce, communications & transportation
43
140 - Specific philosophical schools
33
551 - Geology, hydrology & meteorology
32
576 - Genetics & evolution
30
581 - Specific topics in natural history
29
414 - Phonology & phonetics
26
500 - Natural sciences & mathematics
25
540 - Chemistry & allied sciences
22
720 - Architecture
17
340 - Law
14
658 - General management
14
320 - Political science
11
612 - Human physiology
10
800 - Literature & rhetoric
8
300 - Social sciences
7
304 - Factors affecting social behavior
6
370 - Education
6
170 - Ethics
4
590 - Animals (Zoology)
4
100 - Philosophy & psychology
3
400 - Language
3
530 - Physics
3
770 - Photography, photographs & computer art
3
361 - Social problems & social welfare in general
2
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
410 - Linguistics
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
791 - Public performances
1