Classification
006 - Special computer methods
170
005 - Computer programming, programs & data
42
621 - Applied physics
36
600 - Technology
25
700 - The arts; fine & decorative arts
20
610 - Medicine & health
19
004 - Data processing & computer science
15
620 - Engineering & allied operations
14
000 - Computer science, information & general works
13
140 - Specific philosophical schools
13
570 - Life sciences; biology
13
519 - Probabilities & applied mathematics
9
900 - History & geography
9
580 - Plants (Botany)
8
363 - Other social problems & services
7
333 - Economics of land & energy
6
003 - Systems
5
303 - Social processes
4
330 - Economics
4
380 - Commerce, communications & transportation
4
100 - Philosophy & psychology
3
400 - Language
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
304 - Factors affecting social behavior
2
320 - Political science
2
331 - Labor economics
2
340 - Law
2
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
577 - Ecology
2
614 - Incidence & prevention of disease
2
780 - Music
2
052 - Serials in English
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
323 - Civil & political rights
1
342 - Constitutional & administrative law
1
343 - Military, tax, trade & industrial law
1
345 - Criminal law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
370 - Education
1
410 - Linguistics
1
510 - Mathematics
1
616 - Diseases
1
more ...