Classification
576 - Genetics & evolution
900 - History & geography
600 - Technology
36
620 - Engineering & allied operations
34
700 - The arts; fine & decorative arts
32
333 - Economics of land & energy
19
000 - Computer science, information & general works
13
330 - Economics
13
363 - Other social problems & services
13
380 - Commerce, communications & transportation
13
720 - Architecture
13
580 - Plants (Botany)
10
140 - Specific philosophical schools
9
340 - Law
7
320 - Political science
6
370 - Education
6
300 - Social sciences
5
500 - Natural sciences & mathematics
5
610 - Medicine & health
5
658 - General management
5
800 - Literature & rhetoric
4
301 - Sociology & anthropology
3
400 - Language
3
414 - Phonology & phonetics
3
530 - Physics
3
630 - Agriculture & related technologies
3
100 - Philosophy & psychology
2
170 - Ethics
2
410 - Linguistics
2
540 - Chemistry & allied sciences
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
398 - Folklore
1
551 - Geology, hydrology & meteorology
1
780 - Music
1