Classification
610 - Medicine & health
22
000 - Computer science, information & general works
6
333 - Economics of land & energy
5
140 - Specific philosophical schools
4
570 - Life sciences; biology
4
600 - Technology
4
363 - Other social problems & services
3
700 - The arts; fine & decorative arts
3
330 - Economics
2
500 - Natural sciences & mathematics
2
615 - Pharmacology & therapeutics
2
100 - Philosophy & psychology
1
370 - Education
1
380 - Commerce, communications & transportation
1
530 - Physics
1
580 - Plants (Botany)
1