Genre
- Electronic books 29 198 bohtosa
- Congresses 2 152 bohtosa
- Biography 576 bohtosa
- Handbooks, manuals, etc 324 bohtosa
- Textbooks 306 bohtosa
- Study guides 266 bohtosa
- Identification 234 bohtosa
- Problems, exercises, etc 182 bohtosa
- Popular works 173 bohtosa
- Classification 120 bohtosa
- Dictionaries 110 bohtosa
- Early works to 1800 92 bohtosa
- Case studies 88 bohtosa
- Laboratory manuals 82 bohtosa
- Miscellanea 78 bohtosa
- Pictorial works 70 bohtosa
- Atlases 66 bohtosa
- Anecdotes 46 bohtosa
- Software 44 bohtosa
- Examinations, questions, etc 40 bohtosa
- Encyclopedias 38 bohtosa
- Interviews 28 bohtosa
- Observations 28 bohtosa
- Amateurs' manuals 24 bohtosa
- Sources 24 bohtosa
- Periodicals 22 bohtosa
- Nomenclature 20 bohtosa
- Observers' manuals 20 bohtosa
- Périodiques 18 bohtosa
- Tables 18 bohtosa
- Statistics 16 bohtosa
- Terminology 16 bohtosa
- Correspondence 14 bohtosa
- Maps 14 bohtosa
- Outlines, syllabi, etc 12 bohtosa
- Pre-Linnean works 12 bohtosa
- Bibliography 10 bohtosa
- Charts, diagrams, etc 10 bohtosa
- Folklore 10 bohtosa
- Guidebooks 10 bohtosa
- Humor 10 bohtosa
- Cross-cultural studies 8 bohtosa
- Outdoor books 8 bohtosa
- Trials, litigation, etc 8 bohtosa
- Abstracts 6 bohtosa
- Catalogs and collections 6 bohtosa
- Congrès 6 bohtosa
- Databases 6 bohtosa
- Fiction 6 bohtosa
- Glossaries, vocabularies, etc 6 bohtosa more…