Genre
- Congresses 21 bohtosa
- Biography 19 bohtosa
- Dictionaries 12 bohtosa
- Juvenile literature 11 bohtosa
- Periodicals 11 bohtosa
- Problems, exercises, etc 9 bohtosa
- Encyclopedias 4 bohtosa
- Bibliography 3 bohtosa
- Popular works 3 bohtosa
- Textbooks 3 bohtosa
- Examinations, questions, etc 2 bohtosa
- Interviews 2 bohtosa
- Statistics 2 bohtosa
- Book reviews 1 bohtosa
- Case studies 1 bohtosa
- Early works to 1800 1 bohtosa
- Handbooks, manuals, etc 1 bohtosa
- Humor 1 bohtosa
- Miscellanea 1 bohtosa
- Quotations, maxims, etc 1 bohtosa