Classification
600 - Technology
11
000 - Computer science, information & general works
10
620 - Engineering & allied operations
10
700 - The arts; fine & decorative arts
9
900 - History & geography
9
333 - Economics of land & energy
6
576 - Genetics & evolution
4
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1