Genre
- Congresses 18 canlyniadau
- Case studies 8 canlyniadau
- Cross-cultural studies 5 canlyniadau
- Periodicals 4 canlyniadau
- Juvenile fiction 3 canlyniadau
- Juvenile literature 3 canlyniadau
- Problems, exercises, etc 2 canlyniadau
- Bibliography 1 canlyniadau
- Fiction 1 canlyniadau
- Pictorial works 1 canlyniadau
- Sources 1 canlyniadau
- Statistics 1 canlyniadau