Classification
720 - Architecture
900 - History & geography
700 - The arts; fine & decorative arts
9
140 - Specific philosophical schools
4
620 - Engineering & allied operations
3
800 - Literature & rhetoric
3
300 - Social sciences
2
320 - Political science
2
363 - Other social problems & services
2
770 - Photography, photographs & computer art
2
200 - Religion
1
301 - Sociology & anthropology
1
330 - Economics
1
340 - Law
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1