Classification
900 - History & geography
22
470 - Italic languages; Latin
17
820 - English & Old English literatures
13
330 - Economics
8
340 - Law
7
501 - Philosophy & theory
7
800 - Literature & rhetoric
7
320 - Political science
6
510 - Mathematics
6
938 - Greece to 323
6
100 - Philosophy & psychology
5
170 - Ethics
5
500 - Natural sciences & mathematics
5
700 - The arts; fine & decorative arts
5
338 - Production
4
520 - Astronomy & allied sciences
4
620 - Engineering & allied operations
4
930 - History of ancient world to ca. 499
4
180 - Ancient, medieval & eastern philosophy
3
200 - Religion
3
306 - Culture & institutions
3
880 - Hellenic literatures; classical Greek
3
000 - Computer science, information & general works
2
006 - Special computer methods
2
184 - Platonic philosophy
2
292 - Greek & Roman religion
2
300 - Social sciences
2
333 - Economics of land & energy
2
339 - Macroeconomics & related topics
2
349 - Law of specific jurisdictions & areas
2
370 - Education
2
380 - Commerce, communications & transportation
2
509 - Historical, geographic & persons treatment
2
515 - Analysis
2
516 - Geometry
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
616 - Diseases
2
881 - Classical Greek poetry
2
005 - Computer programming, programs & data
1
070 - News media, journalism & publishing
1
109 - Historical & collected persons treatment
1
115 - Time
1
120 - Epistemology, causation & humankind
1
123 - Determinism & indeterminism
1
128 - Humankind
1
133 - Specific topics in parapsychology & occultism
1
142 - Critical philosophy
1
150 - Psychology
1
more ...