Genre
- Congresses 519 canlyniadau
- Handbooks, manuals, etc 63 canlyniadau
- Problems, exercises, etc 30 canlyniadau
- Textbooks 25 canlyniadau
- Case studies 12 canlyniadau
- Dictionaries 8 canlyniadau
- Biography 6 canlyniadau
- Tables 5 canlyniadau
- Early works to 1800 4 canlyniadau
- Laboratory manuals 4 canlyniadau
- Juvenile literature 3 canlyniadau
- Miscellanea 3 canlyniadau
- Exhibitions 2 canlyniadau
- Juvenile fiction 2 canlyniadau
- Outlines, syllabi, etc 2 canlyniadau
- Popular works 2 canlyniadau
- Sources 2 canlyniadau
- Statistics 2 canlyniadau
- Charts, diagrams, etc 1 canlyniadau
- Constitution 1 canlyniadau
- Electric equipment 1 canlyniadau
- Facsimiles 1 canlyniadau
- Film adaptations 1 canlyniadau
- Forms 1 canlyniadau
- Interviews 1 canlyniadau
- Legends 1 canlyniadau
- Periodicals 1 canlyniadau
- Personal narratives, New Zealand 1 canlyniadau
- Study guides 1 canlyniadau
- Textbooks for foreign speakers 1 canlyniadau
- Translations into English 1 canlyniadau