Classification
200 - Religion
2
581 - Specific topics in natural history
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
300 - Social sciences
1
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
620 - Engineering & allied operations
1
900 - History & geography
1