Classification
370 - Education
17
900 - History & geography
6
720 - Architecture
3
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
330 - Economics
1
333 - Economics of land & energy
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1