Classification
000 - Computer science, information & general works
333 - Economics of land & energy
2
370 - Education
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
320 - Political science
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
900 - History & geography
1