Classification
620 - Engineering & allied operations
621 - Applied physics
745 - Decorative arts
92
500 - Natural sciences & mathematics
41
384 - Communications; telecommunication
38
331 - Labor economics
22
781 - General principles & musical forms
10
510 - Mathematics
9
000 - Computer science, information & general works
8
629 - Other branches of engineering
8
658 - General management
8
005 - Computer programming, programs & data
7
004 - Data processing & computer science
6
006 - Special computer methods
5
338 - Production
5
600 - Technology
4
681 - Precision instruments & other devices
4
519 - Probabilities & applied mathematics
3
153 - Mental processes & intelligence
2
330 - Economics
2
610 - Medicine & health
2
670 - Manufacturing
2
003 - Systems
1
011 - Bibliographies
1
025 - Library operations
1
302 - Social interaction
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
364 - Criminology
1
374 - Adult education
1
381 - Commerce
1
387 - Water, air & space transportation
1
511 - General principles of mathematics
1
530 - Physics
1
532 - Fluid mechanics; liquid mechanics
1
623 - Military & nautical engineering
1
650 - Management & auxiliary services
1
660 - Chemical engineering
1
683 - Hardware & household appliances
1
800 - Literature & rhetoric
1