Genre
- Textbooks 58 canlyniadau
- Problems, exercises, etc 36 canlyniadau
- Case studies 18 canlyniadau
- Juvenile literature 15 canlyniadau
- Handbooks, manuals, etc 9 canlyniadau
- Study guides 4 canlyniadau
- Textbooks for foreign speakers 3 canlyniadau
- Cases 1 canlyniadau
- Drawings 1 canlyniadau
- Juvenile 1 canlyniadau
- Software 1 canlyniadau
- Terminology 1 canlyniadau
- Terms and phrases 1 canlyniadau