Classification
004 - Data processing & computer science
54
006 - Special computer methods
40
005 - Computer programming, programs & data
27
820 - English & Old English literatures
15
880 - Hellenic literatures; classical Greek
13
320 - Political science
11
620 - Engineering & allied operations
7
303 - Social processes
6
616 - Diseases
6
003 - Systems
5
518 - Numerical analysis
5
938 - Greece to 323
5
306 - Culture & institutions
4
331 - Labor economics
4
330 - Economics
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
600 - Technology
3
610 - Medicine & health
3
658 - General management
3
900 - History & geography
3
025 - Library operations
2
292 - Greek & Roman religion
2
323 - Civil & political rights
2
338 - Production
2
340 - Law
2
371 - Schools & their activities; special education
2
380 - Commerce, communications & transportation
2
511 - General principles of mathematics
2
519 - Probabilities & applied mathematics
2
520 - Astronomy & allied sciences
2
572 - Biochemistry
2
629 - Other branches of engineering
2
700 - The arts; fine & decorative arts
2
792 - Stage presentations
2
882 - Classical Greek dramatic poetry & drama
2
940 - History of Europe
2
000 - Computer science, information & general works
1
001 - Knowledge
1
290 - Other religions
1
300 - Social sciences
1
301 - Sociology & anthropology
1
305 - Social groups
1
307 - Communities
1
343 - Military, tax, trade & industrial law
1
351 - Public administration
1
401 - Philosophy & theory
1
417 - Dialectology & historical linguistics
1
510 - Mathematics
1
514 - Topology
1
more ...