Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
410 - Linguistics
500 - Natural sciences & mathematics
700 - The arts; fine & decorative arts
333 - Economics of land & energy
2
400 - Language
2
800 - Literature & rhetoric
2
160 - Logic
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
600 - Technology
1