Classification
005 - Computer programming, programs & data
239
004 - Data processing & computer science
146
006 - Special computer methods
131
003 - Systems
117
025 - Library operations
59
621 - Applied physics
19
020 - Library & information sciences
9
511 - General principles of mathematics
6
410 - Linguistics
5
658 - General management
5
330 - Economics
4
501 - Philosophy & theory
4
610 - Medicine & health
4
910 - Geography & travel
4
338 - Production
3
371 - Schools & their activities; special education
3
333 - Economics of land & energy
2
370 - Education
2
381 - Commerce
2
510 - Mathematics
2
519 - Probabilities & applied mathematics
2
616 - Diseases
2
160 - Logic
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
500 - Natural sciences & mathematics
1
518 - Numerical analysis
1
537 - Electricity & electronics
1
614 - Incidence & prevention of disease
1
620 - Engineering & allied operations
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1