Genre
- Periodicals 2.214 Treffer
- Congresses 342 Treffer
- Statistics 175 Treffer
- Biography 88 Treffer
- Handbooks, manuals, etc 56 Treffer
- Juvenile literature 51 Treffer
- Directories 47 Treffer
- Pictorial works 46 Treffer
- Cases 27 Treffer
- Anecdotes 25 Treffer
- Bibliography 24 Treffer
- Case studies 22 Treffer
- Newspapers 22 Treffer
- Guidebooks 19 Treffer
- Identification 19 Treffer
- Scores 18 Treffer
- Dictionaries 16 Treffer
- Early works to 1800 16 Treffer
- Observations 16 Treffer
- Vocal scores with piano 15 Treffer
- Catalogs 14 Treffer
- Maps 11 Treffer
- Exhibitions 8 Treffer
- Indexes 7 Treffer
- Encyclopedias 6 Treffer
- Excerpts 6 Treffer
- Juvenile fiction 5 Treffer
- Genealogy 4 Treffer
- Imprints 4 Treffer
- Portraits 4 Treffer
- Tables 4 Treffer
- Terminology 4 Treffer
- Abstracts 3 Treffer
- Decision making 3 Treffer
- Laboratory manuals 3 Treffer
- Musical settings 3 Treffer
- Reviews 3 Treffer
- Sources 3 Treffer
- Statistics, Medical 3 Treffer
- Classification 2 Treffer
- Databases 2 Treffer
- Drama 2 Treffer
- Examinations, questions, etc 2 Treffer
- Miscellanea 2 Treffer
- Posters 2 Treffer
- Texts 2 Treffer
- Atlases 1 Treffer
- Caricatures and cartoons 1 Treffer
- Charts, diagrams, etc 1 Treffer
- Constitution 1 Treffer mehr …