Classification
363 - Other social problems & services
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
177
620 - Engineering & allied operations
172
333 - Economics of land & energy
123
000 - Computer science, information & general works
73
330 - Economics
71
380 - Commerce, communications & transportation
60
320 - Political science
50
140 - Specific philosophical schools
49
610 - Medicine & health
40
580 - Plants (Botany)
39
720 - Architecture
38
551 - Geology, hydrology & meteorology
36
576 - Genetics & evolution
27
581 - Specific topics in natural history
27
370 - Education
25
340 - Law
18
800 - Literature & rhetoric
18
630 - Agriculture & related technologies
15
100 - Philosophy & psychology
13
300 - Social sciences
13
400 - Language
13
301 - Sociology & anthropology
12
414 - Phonology & phonetics
12
500 - Natural sciences & mathematics
11
200 - Religion
8
170 - Ethics
7
540 - Chemistry & allied sciences
7
530 - Physics
6
658 - General management
5
304 - Factors affecting social behavior
4
120 - Epistemology, causation & humankind
2
297 - Islam, Babism & Bahai Faith
2
410 - Linguistics
2
550 - Earth sciences
2
612 - Human physiology
2
770 - Photography, photographs & computer art
2
780 - Music
2
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
520 - Astronomy & allied sciences
1
590 - Animals (Zoology)
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
791 - Public performances
1
920 - Biography, genealogy & insignia
1