Classification
050 - General serial publications
9
501 - Philosophy & theory
9
510 - Mathematics
5
330 - Economics
4
511 - General principles of mathematics
4
100 - Philosophy & psychology
3
500 - Natural sciences & mathematics
2
111 - Ontology
1
419 - Sign languages
1
519 - Probabilities & applied mathematics
1
530 - Physics
1
650 - Management & auxiliary services
1
658 - General management
1