Classification
330 - Economics
57
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
320 - Political science
1
332 - Financial economics
1
333 - Economics of land & energy
1
338 - Production
1
363 - Other social problems & services
1
384 - Communications; telecommunication
1
551 - Geology, hydrology & meteorology
1
659 - Advertising & public relations
1
700 - The arts; fine & decorative arts
1