Subject (Genre)
- Biography13
- Maps13
- Periodical11
- Audiobooks10
- Environmental films9
- Databases8
- Encyclopedias8
- Forecasts8
- Dictionaries7
- Television news programs7
- Academic theses6
- Atlases6
- Designs and plans6
- Exhibitions6
- Cases5
- Criticism, interpretation, etc5
- Cross-cultural studies5
- Documentaries and Factual Films5
- Essays5
- Handbooks and manuals5