Classification
006 - Special computer methods
408
371 - Schools & their activities; special education
314
005 - Computer programming, programs & data
308
004 - Data processing & computer science
286
374 - Adult education
37
303 - Social processes
18
025 - Library operations
16
621 - Applied physics
15
370 - Education
12
658 - General management
10
381 - Commerce
9
300 - Social sciences
8
610 - Medicine & health
6
003 - Systems
5
153 - Mental processes & intelligence
3
510 - Mathematics
3
519 - Probabilities & applied mathematics
3
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
571 - Physiology & related subjects
2
611 - Human anatomy, cytology & histology
2
910 - Geography & travel
2
020 - Library & information sciences
1
030 - General encyclopedic works
1
301 - Sociology & anthropology
1
302 - Social interaction
1
304 - Factors affecting social behavior
1
330 - Economics
1
338 - Production
1
343 - Military, tax, trade & industrial law
1
378 - Higher education
1
410 - Linguistics
1
418 - Standard usage & applied linguistics
1
500 - Natural sciences & mathematics
1
502 - Miscellany
1
507 - Education, research & related topics
1
530 - Physics
1
570 - Life sciences; biology
1
572 - Biochemistry
1
601 - Philosophy & theory
1
612 - Human physiology
1
617 - Surgery & related medical specialties
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1
670 - Manufacturing
1
720 - Architecture
1
745 - Decorative arts
1
780 - Music
1
808 - Rhetoric & collections of literature
1