Genre
- Congresses 53 Treffer
- Periodicals 18 Treffer
- Handbooks, manuals, etc 9 Treffer
- Statistics 7 Treffer
- Case studies 4 Treffer
- Directories 4 Treffer
- Juvenile literature 4 Treffer
- Bibliography 2 Treffer
- Databases 2 Treffer
- Specifications 2 Treffer
- Catalogs 1 Treffer
- Fiction 1 Treffer
- Pictorial works 1 Treffer
- Readers 1 Treffer
- Safety regulations 1 Treffer