Classification
581 - Specific topics in natural history
363 - Other social problems & services
37
333 - Economics of land & energy
34
630 - Agriculture & related technologies
34
580 - Plants (Botany)
31
000 - Computer science, information & general works
29
700 - The arts; fine & decorative arts
28
551 - Geology, hydrology & meteorology
24
330 - Economics
23
610 - Medicine & health
23
600 - Technology
21
620 - Engineering & allied operations
16
140 - Specific philosophical schools
13
320 - Political science
12
576 - Genetics & evolution
11
380 - Commerce, communications & transportation
10
900 - History & geography
9
300 - Social sciences
8
500 - Natural sciences & mathematics
7
540 - Chemistry & allied sciences
6
370 - Education
5
612 - Human physiology
5
200 - Religion
4
100 - Philosophy & psychology
3
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
3
410 - Linguistics
3
414 - Phonology & phonetics
3
520 - Astronomy & allied sciences
2
615 - Pharmacology & therapeutics
2
658 - General management
2
800 - Literature & rhetoric
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
340 - Law
1
361 - Social problems & social welfare in general
1
398 - Folklore
1
590 - Animals (Zoology)
1
791 - Public performances
1