Classification
003 - Systems
1
005 - Computer programming, programs & data
1
006 - Special computer methods
11
153 - Mental processes & intelligence
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
2
338 - Production
2
370 - Education
1
374 - Adult education
2
600 - Technology
4
607 - Education, research & related topics
2
620 - Engineering & allied operations
22
621 - Applied physics
120
623 - Military & nautical engineering
1
624 - Civil engineering
2
629 - Other branches of engineering
328
660 - Chemical engineering
1
667 - Cleaning, color & coating technologies
3
670 - Manufacturing
3
690 - Buildings
1