Classification
900 - History & geography
10
330 - Economics
9
700 - The arts; fine & decorative arts
7
320 - Political science
5
300 - Social sciences
4
304 - Factors affecting social behavior
4
100 - Philosophy & psychology
3
333 - Economics of land & energy
3
400 - Language
3
500 - Natural sciences & mathematics
3
600 - Technology
3
612 - Human physiology
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
302 - Social interaction
2
370 - Education
2
380 - Commerce, communications & transportation
2
621 - Applied physics
2
658 - General management
2
770 - Photography, photographs & computer art
2
800 - Literature & rhetoric
2
003 - Systems
1
006 - Special computer methods
1
120 - Epistemology, causation & humankind
1
142 - Critical philosophy
1
153 - Mental processes & intelligence
1
154 - Subconscious & altered states
1
170 - Ethics
1
181 - Eastern philosophy
1
201 - Religious mythology & social theology
1
230 - Christianity & Christian theology
1
301 - Sociology & anthropology
1
306 - Culture & institutions
1
331 - Labor economics
1
338 - Production
1
340 - Law
1
349 - Law of specific jurisdictions & areas
1
410 - Linguistics
1
519 - Probabilities & applied mathematics
1
610 - Medicine & health
1
613 - Personal health & safety
1
620 - Engineering & allied operations
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1
780 - Music
1
809 - History, description & criticism
1
892 - Afro-Asiatic literatures; Semitic literatures
1
952 - Japan
1