Classification
610 - Medicine & health
8
615 - Pharmacology & therapeutics
8
000 - Computer science, information & general works
7
140 - Specific philosophical schools
5
333 - Economics of land & energy
5
600 - Technology
5
570 - Life sciences; biology
4
700 - The arts; fine & decorative arts
4
380 - Commerce, communications & transportation
3
620 - Engineering & allied operations
3
900 - History & geography
3
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
320 - Political science
1
340 - Law
1
414 - Phonology & phonetics
1
581 - Specific topics in natural history
1
628 - Sanitary & municipal engineering
1
660 - Chemical engineering
1
800 - Literature & rhetoric
1