Classification
910 - Geography & travel
550 - Earth sciences
240
500 - Natural sciences & mathematics
25
620 - Engineering & allied operations
14
384 - Communications; telecommunication
3
510 - Mathematics
3
745 - Decorative arts
3
330 - Economics
2
519 - Probabilities & applied mathematics
2
658 - General management
2
005 - Computer programming, programs & data
1
051 - Serials in American English
1
111 - Ontology
1
121 - Epistemology
1
301 - Sociology & anthropology
1
331 - Labor economics
1
338 - Production
1
364 - Criminology
1
381 - Commerce
1
600 - Technology
1
800 - Literature & rhetoric
1
900 - History & geography
1