Classification
000 - Computer science, information & general works
581 - Specific topics in natural history
363 - Other social problems & services
57
700 - The arts; fine & decorative arts
52
551 - Geology, hydrology & meteorology
38
333 - Economics of land & energy
37
580 - Plants (Botany)
32
330 - Economics
29
610 - Medicine & health
29
140 - Specific philosophical schools
28
900 - History & geography
24
576 - Genetics & evolution
23
320 - Political science
19
600 - Technology
19
380 - Commerce, communications & transportation
17
414 - Phonology & phonetics
16
630 - Agriculture & related technologies
12
540 - Chemistry & allied sciences
11
620 - Engineering & allied operations
10
500 - Natural sciences & mathematics
9
800 - Literature & rhetoric
8
304 - Factors affecting social behavior
7
300 - Social sciences
6
370 - Education
6
590 - Animals (Zoology)
6
100 - Philosophy & psychology
5
301 - Sociology & anthropology
5
612 - Human physiology
5
658 - General management
5
170 - Ethics
4
200 - Religion
4
400 - Language
3
361 - Social problems & social welfare in general
2
530 - Physics
2
720 - Architecture
2
791 - Public performances
2
340 - Law
1
364 - Criminology
1
398 - Folklore
1
410 - Linguistics
1
520 - Astronomy & allied sciences
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
657 - Accounting
1
780 - Music
1