Classification
580 - Plants (Botany)
610 - Medicine & health
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
12
620 - Engineering & allied operations
12
380 - Commerce, communications & transportation
11
333 - Economics of land & energy
10
363 - Other social problems & services
9
576 - Genetics & evolution
7
600 - Technology
7
140 - Specific philosophical schools
6
414 - Phonology & phonetics
6
500 - Natural sciences & mathematics
6
551 - Geology, hydrology & meteorology
6
630 - Agriculture & related technologies
6
300 - Social sciences
5
612 - Human physiology
5
540 - Chemistry & allied sciences
4
581 - Specific topics in natural history
4
800 - Literature & rhetoric
4
900 - History & geography
3
100 - Philosophy & psychology
2
170 - Ethics
2
340 - Law
2
720 - Architecture
2
304 - Factors affecting social behavior
1
330 - Economics
1
520 - Astronomy & allied sciences
1