Classification
025 - Library operations
14
006 - Special computer methods
8
500 - Natural sciences & mathematics
8
331 - Labor economics
5
658 - General management
4
300 - Social sciences
3
745 - Decorative arts
3
004 - Data processing & computer science
2
302 - Social interaction
2
620 - Engineering & allied operations
2
621 - Applied physics
2
000 - Computer science, information & general works
1
001 - Knowledge
1
005 - Computer programming, programs & data
1
011 - Bibliographies
1
330 - Economics
1
371 - Schools & their activities; special education
1
384 - Communications; telecommunication
1
511 - General principles of mathematics
1
670 - Manufacturing
1
690 - Buildings
1