Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Japan -- Description and travel., 1 canlyniadau
- Soviet Union -- Description and travel., 1 canlyniadau
- Agriculture -- Soviet Union., 1 canlyniadau
- Soviet Union., 1 canlyniadau
- Soviet Union -- Economic conditions., 1 canlyniadau
- Soviet Union -- Social life and customs., 1 canlyniadau
- Soviet Union -- Politics and government., 1 canlyniadau
- Soviet Union -- Industry., 1 canlyniadau
- Soviet Union -- Industries., 1 canlyniadau
- Japan -- Foreign relations., 1 canlyniadau
