Genre
- Anecdotes 1 bohtosa
- Bibliography 4 bohtosa
- Biography 2 bohtosa
- Caricatures and cartoons 1 bohtosa
- Case studies 3 bohtosa
- Congresses 44 bohtosa
- Forecasts 2 bohtosa
- Handbooks, manuals, etc 1 bohtosa
- Juvenile literature 3 bohtosa
- Periodicals 27 bohtosa
- Personal narratives 1 bohtosa
- Platforms 15 bohtosa
- Problems, exercises, etc 1 bohtosa
- Statistics 7 bohtosa