Classification
004 - Data processing & computer science
447
005 - Computer programming, programs & data
148
658 - General management
134
650 - Management & auxiliary services
88
006 - Special computer methods
68
025 - Library operations
22
621 - Applied physics
12
670 - Manufacturing
10
000 - Computer science, information & general works
8
330 - Economics
6
338 - Production
4
502 - Miscellany
4
353 - Specific fields of public administration
3
346 - Private law
2
371 - Schools & their activities; special education
2
550 - Earth sciences
2
720 - Architecture
2
301 - Sociology & anthropology
1
302 - Social interaction
1
307 - Communities
1
320 - Political science
1
340 - Law
1
350 - Public administration & military science
1
363 - Other social problems & services
1
526 - Mathematical geography
1
530 - Physics
1
543 - Analytical chemistry
1
570 - Life sciences; biology
1
600 - Technology
1
610 - Medicine & health
1
612 - Human physiology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
690 - Buildings
1
700 - The arts; fine & decorative arts
1
770 - Photography, photographs & computer art
1
900 - History & geography
1