Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Agriculture -- Wales, South, 2 canlyniadau
- Wales, South -- Economic conditions -- 19th century., 2 canlyniadau
- Wales, North -- Surveys, 2 canlyniadau
- Glamorgan (Wales) -- Description and travel., 1 canlyniadau
- Breconshire (Wales) -- Description and travel, 1 canlyniadau
- Geology -- Wales -- Glamorgan, 1 canlyniadau
- Monmouthshire (Wales) -- Description and travel, 1 canlyniadau
- Agriculture -- Wales, 1 canlyniadau
- Industries -- Wales, 1 canlyniadau
- Geology -- Wales -- Breconshire., 1 canlyniadau