Classification
401 - Philosophy & theory
80
006 - Special computer methods
30
306 - Culture & institutions
29
004 - Data processing & computer science
27
005 - Computer programming, programs & data
27
418 - Standard usage & applied linguistics
17
340 - Law
14
410 - Linguistics
14
510 - Mathematics
14
370 - Education
13
302 - Social interaction
10
415 - Grammar
10
149 - Other philosophical systems
8
300 - Social sciences
8
620 - Engineering & allied operations
8
301 - Sociology & anthropology
7
407 - Education, research & related topics
7
612 - Human physiology
7
616 - Diseases
7
570 - Life sciences; biology
6
576 - Genetics & evolution
6
150 - Psychology
5
160 - Logic
5
304 - Factors affecting social behavior
5
371 - Schools & their activities; special education
5
621 - Applied physics
5
791 - Public performances
5
320 - Political science
4
519 - Probabilities & applied mathematics
4
577 - Ecology
4
610 - Medicine & health
4
658 - General management
4
780 - Music
4
003 - Systems
3
025 - Library operations
3
120 - Epistemology, causation & humankind
3
142 - Critical philosophy
3
155 - Differential & developmental psychology
3
363 - Other social problems & services
3
507 - Education, research & related topics
3
809 - History, description & criticism
3
910 - Geography & travel
3
930 - History of ancient world to ca. 499
3
100 - Philosophy & psychology
2
111 - Ontology
2
128 - Humankind
2
303 - Social processes
2
305 - Social groups
2
307 - Communities
2
440 - Romance languages; French
2
more ...