Classification
551 - Geology, hydrology & meteorology
580 - Plants (Botany)
000 - Computer science, information & general works
13
700 - The arts; fine & decorative arts
9
330 - Economics
8
620 - Engineering & allied operations
8
333 - Economics of land & energy
7
363 - Other social problems & services
7
140 - Specific philosophical schools
6
380 - Commerce, communications & transportation
6
581 - Specific topics in natural history
6
610 - Medicine & health
5
630 - Agriculture & related technologies
5
300 - Social sciences
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
576 - Genetics & evolution
3
600 - Technology
3
612 - Human physiology
3
900 - History & geography
3
320 - Political science
2
720 - Architecture
2
800 - Literature & rhetoric
2
340 - Law
1
370 - Education
1