Classification
576 - Genetics & evolution
900 - History & geography
600 - Technology
36
620 - Engineering & allied operations
30
700 - The arts; fine & decorative arts
29
333 - Economics of land & energy
22
320 - Political science
14
380 - Commerce, communications & transportation
14
363 - Other social problems & services
13
000 - Computer science, information & general works
11
330 - Economics
11
340 - Law
11
140 - Specific philosophical schools
8
720 - Architecture
8
300 - Social sciences
7
800 - Literature & rhetoric
7
100 - Philosophy & psychology
6
580 - Plants (Botany)
5
200 - Religion
4
500 - Natural sciences & mathematics
4
658 - General management
4
170 - Ethics
3
370 - Education
3
610 - Medicine & health
3
630 - Agriculture & related technologies
3
780 - Music
3
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
414 - Phonology & phonetics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
650 - Management & auxiliary services
2
120 - Epistemology, causation & humankind
1
296 - Judaism
1
398 - Folklore
1
540 - Chemistry & allied sciences
1
770 - Photography, photographs & computer art
1
791 - Public performances
1