Classification
401 - Philosophy & theory
13
006 - Special computer methods
5
004 - Data processing & computer science
4
410 - Linguistics
4
005 - Computer programming, programs & data
3
025 - Library operations
3
149 - Other philosophical systems
3
371 - Schools & their activities; special education
3
302 - Social interaction
2
306 - Culture & institutions
2
610 - Medicine & health
2
616 - Diseases
2
620 - Engineering & allied operations
2
780 - Music
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
109 - Historical & collected persons treatment
1
113 - Cosmology
1
153 - Mental processes & intelligence
1
170 - Ethics
1
190 - Modern western philosophy
1
300 - Social sciences
1
301 - Sociology & anthropology
1
303 - Social processes
1
304 - Factors affecting social behavior
1
324 - The political process
1
330 - Economics
1
331 - Labor economics
1
338 - Production
1
340 - Law
1
343 - Military, tax, trade & industrial law
1
370 - Education
1
381 - Commerce
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
501 - Philosophy & theory
1
515 - Analysis
1
519 - Probabilities & applied mathematics
1
600 - Technology
1
601 - Philosophy & theory
1
612 - Human physiology
1
621 - Applied physics
1
658 - General management
1
670 - Manufacturing
1
700 - The arts; fine & decorative arts
1
809 - History, description & criticism
1
900 - History & geography
1
910 - Geography & travel
1