Classification
620 - Engineering & allied operations
86
700 - The arts; fine & decorative arts
76
600 - Technology
67
610 - Medicine & health
50
580 - Plants (Botany)
33
900 - History & geography
33
000 - Computer science, information & general works
28
333 - Economics of land & energy
27
540 - Chemistry & allied sciences
23
140 - Specific philosophical schools
17
363 - Other social problems & services
17
330 - Economics
10
414 - Phonology & phonetics
9
304 - Factors affecting social behavior
7
370 - Education
7
380 - Commerce, communications & transportation
7
500 - Natural sciences & mathematics
6
576 - Genetics & evolution
6
612 - Human physiology
4
720 - Architecture
4
800 - Literature & rhetoric
4
400 - Language
3
530 - Physics
3
615 - Pharmacology & therapeutics
3
630 - Agriculture & related technologies
3
410 - Linguistics
2
170 - Ethics
1
300 - Social sciences
1
340 - Law
1
361 - Social problems & social welfare in general
1
570 - Life sciences; biology
1
572 - Biochemistry
1
658 - General management
1
677 - Textiles
1
780 - Music
1