Classification
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200 - Religion
3
297 - Islam, Babism & Bahai Faith
3
660 - Chemical engineering
3
691 - Building materials
3
006 - Special computer methods
2
120 - Epistemology, causation & humankind
2
332 - Financial economics
2
336 - Public finance
2
360 - Social problems & services; associations
2
384 - Communications; telecommunication
2
519 - Probabilities & applied mathematics
2
550 - Earth sciences
2
577 - Ecology
2
590 - Animals (Zoology)
2
629 - Other branches of engineering
2
745 - Decorative arts
2
004 - Data processing & computer science
1
150 - Psychology
1
160 - Logic
1
307 - Communities
1
339 - Macroeconomics & related topics
1
344 - Labor, social, education & cultural law
1
641 - Food & drink
1
664 - Food technology
1
693 - Specific materials & purposes
1
696 - Utilities
1
728 - Residential & related buildings
1
770 - Photography, photographs & computer art
1
780 - Music
1
791 - Public performances
1