Classification
551 - Geology, hydrology & meteorology
000 - Computer science, information & general works
38
580 - Plants (Botany)
35
363 - Other social problems & services
29
630 - Agriculture & related technologies
25
700 - The arts; fine & decorative arts
24
600 - Technology
23
333 - Economics of land & energy
21
620 - Engineering & allied operations
21
610 - Medicine & health
18
380 - Commerce, communications & transportation
12
330 - Economics
10
581 - Specific topics in natural history
10
140 - Specific philosophical schools
8
500 - Natural sciences & mathematics
7
612 - Human physiology
7
900 - History & geography
6
576 - Genetics & evolution
5
414 - Phonology & phonetics
4
540 - Chemistry & allied sciences
4
658 - General management
4
720 - Architecture
4
800 - Literature & rhetoric
4
300 - Social sciences
3
340 - Law
3
320 - Political science
2
370 - Education
2
400 - Language
1
410 - Linguistics
1
530 - Physics
1
550 - Earth sciences
1
657 - Accounting
1