Classification
629 - Other branches of engineering
673
621 - Applied physics
139
620 - Engineering & allied operations
49
658 - General management
24
670 - Manufacturing
17
624 - Civil engineering
10
660 - Chemical engineering
9
531 - Classical mechanics; solid mechanics
7
005 - Computer programming, programs & data
5
307 - Communities
5
650 - Management & auxiliary services
5
004 - Data processing & computer science
4
338 - Production
4
006 - Special computer methods
3
303 - Social processes
3
520 - Astronomy & allied sciences
3
003 - Systems
2
330 - Economics
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
519 - Probabilities & applied mathematics
2
610 - Medicine & health
2
150 - Psychology
1
158 - Applied psychology
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
321 - Systems of governments & states
1
342 - Constitutional & administrative law
1
345 - Criminal law
1
362 - Social welfare problems & services
1
370 - Education
1
374 - Adult education
1
500 - Natural sciences & mathematics
1
534 - Sound & related vibrations
1
547 - Organic chemistry
1
607 - Education, research & related topics
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
617 - Surgery & related medical specialties
1
710 - Civic & landscape art
1
900 - History & geography
1