Classification
300 - Social sciences
10
330 - Economics
9
320 - Political science
8
270 - History of Christianity & Christian church
7
306 - Culture & institutions
7
332 - Financial economics
7
005 - Computer programming, programs & data
4
327 - International relations
4
338 - Production
4
519 - Probabilities & applied mathematics
3
520 - Astronomy & allied sciences
3
820 - English & Old English literatures
3
900 - History & geography
3
142 - Critical philosophy
2
347 - Civil procedure & courts
2
370 - Education
2
378 - Higher education
2
511 - General principles of mathematics
2
800 - Literature & rhetoric
2
870 - Italic literatures; Latin literature
2
004 - Data processing & computer science
1
006 - Special computer methods
1
050 - General serial publications
1
128 - Humankind
1
153 - Mental processes & intelligence
1
260 - Social & ecclesiastical theology
1
280 - Christian denominations & sects
1
302 - Social interaction
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
342 - Constitutional & administrative law
1
355 - Military science
1
364 - Criminology
1
387 - Water, air & space transportation
1
410 - Linguistics
1
415 - Grammar
1
500 - Natural sciences & mathematics
1
510 - Mathematics
1
516 - Geometry
1
541 - Physical chemistry
1
600 - Technology
1
610 - Medicine & health
1
613 - Personal health & safety
1
616 - Diseases
1
620 - Engineering & allied operations
1
629 - Other branches of engineering
1
658 - General management
1
670 - Manufacturing
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
more ...