Classification
005 - Computer programming, programs & data
1,264
006 - Special computer methods
787
004 - Data processing & computer science
305
025 - Library operations
179
003 - Systems
92
621 - Applied physics
61
658 - General management
29
518 - Numerical analysis
24
570 - Life sciences; biology
20
610 - Medicine & health
17
303 - Social processes
9
572 - Biochemistry
9
910 - Geography & travel
8
381 - Commerce
5
300 - Social sciences
4
304 - Factors affecting social behavior
4
330 - Economics
4
371 - Schools & their activities; special education
4
519 - Probabilities & applied mathematics
4
530 - Physics
4
620 - Engineering & allied operations
4
020 - Library & information sciences
3
333 - Economics of land & energy
3
410 - Linguistics
3
501 - Philosophy & theory
3
670 - Manufacturing
3
690 - Buildings
3
001 - Knowledge
2
323 - Civil & political rights
2
332 - Financial economics
2
338 - Production
2
520 - Astronomy & allied sciences
2
160 - Logic
1
174 - Occupational ethics
1
306 - Culture & institutions
1
336 - Public finance
1
340 - Law
1
351 - Public administration
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
364 - Criminology
1
500 - Natural sciences & mathematics
1
512 - Algebra
1
550 - Earth sciences
1
571 - Physiology & related subjects
1
616 - Diseases
1
624 - Civil engineering
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1