Classification
330 - Economics
2
004 - Data processing & computer science
1
304 - Factors affecting social behavior
1
341 - Law of nations
1
342 - Constitutional & administrative law
1
374 - Adult education
1
380 - Commerce, communications & transportation
1
384 - Communications; telecommunication
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
630 - Agriculture & related technologies
1
631 - Techniques, equipment & materials
1
660 - Chemical engineering
1