Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- New York (N.Y.) -- Description and travel, 2 canlyniadau
- Germany -- Description and travel, 1 canlyniadau
- China -- Description and travel., 1 canlyniadau
- Great Britain -- Politics and government -- 20th century., 1 canlyniadau
- United States -- Description and travel, 1 canlyniadau
- Japan -- Description and travel., 1 canlyniadau
- Unemployment., 1 canlyniadau
- Disarmament., 1 canlyniadau
- USSR -- Description and travel., 1 canlyniadau
- Singapore -- Description and travel., 1 canlyniadau