Classification
600 - Technology
620 - Engineering & allied operations
11
363 - Other social problems & services
10
610 - Medicine & health
9
700 - The arts; fine & decorative arts
6
330 - Economics
5
333 - Economics of land & energy
5
630 - Agriculture & related technologies
5
540 - Chemistry & allied sciences
4
551 - Geology, hydrology & meteorology
3
000 - Computer science, information & general works
2
581 - Specific topics in natural history
2
615 - Pharmacology & therapeutics
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
340 - Law
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1