Classification
900 - History & geography
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
576 - Genetics & evolution
1
700 - The arts; fine & decorative arts
1