Classification
333 - Economics of land & energy
530 - Physics
576 - Genetics & evolution
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
600 - Technology
3
700 - The arts; fine & decorative arts
3
340 - Law
2
363 - Other social problems & services
2
900 - History & geography
2
320 - Political science
1
330 - Economics
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
650 - Management & auxiliary services
1