Classification
510 - Mathematics
5
170 - Ethics
3
501 - Philosophy & theory
3
003 - Systems
2
306 - Culture & institutions
2
330 - Economics
2
340 - Law
2
516 - Geometry
2
520 - Astronomy & allied sciences
2
530 - Physics
2
620 - Engineering & allied operations
2
005 - Computer programming, programs & data
1
006 - Special computer methods
1
109 - Historical & collected persons treatment
1
150 - Psychology
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
339 - Macroeconomics & related topics
1
370 - Education
1
500 - Natural sciences & mathematics
1
509 - Historical, geographic & persons treatment
1
511 - General principles of mathematics
1
514 - Topology
1
515 - Analysis
1
551 - Geology, hydrology & meteorology
1
572 - Biochemistry
1
616 - Diseases
1
809 - History, description & criticism
1
909 - World history
1
930 - History of ancient world to ca. 499
1