Classification
580 - Plants (Botany)
610 - Medicine & health
40
700 - The arts; fine & decorative arts
30
170 - Ethics
9
330 - Economics
8
620 - Engineering & allied operations
6
370 - Education
5
600 - Technology
5
140 - Specific philosophical schools
4
340 - Law
4
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
900 - History & geography
3
100 - Philosophy & psychology
2
630 - Agriculture & related technologies
2
658 - General management
2
800 - Literature & rhetoric
2
320 - Political science
1
572 - Biochemistry
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
612 - Human physiology
1
616 - Diseases
1
631 - Techniques, equipment & materials
1