Classification
200 - Religion
330 - Economics
900 - History & geography
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
304 - Factors affecting social behavior
1
320 - Political science
1
340 - Law
1
370 - Education
1
410 - Linguistics
1
600 - Technology
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1