Classification
616 - Diseases
331 - Labor economics
9
500 - Natural sciences & mathematics
9
519 - Probabilities & applied mathematics
5
620 - Engineering & allied operations
5
158 - Applied psychology
3
302 - Social interaction
3
338 - Production
3
384 - Communications; telecommunication
3
510 - Mathematics
3
658 - General management
3
330 - Economics
2
001 - Knowledge
1
011 - Bibliographies
1
170 - Ethics
1
381 - Commerce
1
650 - Management & auxiliary services
1
745 - Decorative arts
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1