Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Welsh Black Cattle Society -- Records and correspondence., 2 canlyniadau
- Welsh Plant Breeding Station., 1 canlyniadau
- National Institute of Agricultural Botany (Great Britain), 1 canlyniadau
- John Harvey & Sons (Firm) -- Archives, 1 canlyniadau
- Church of England. Diocese of Saint David's -- Records and correspondence, 1 canlyniadau
- Gorsgoch Collieries (Cross Hands, Wales), 1 canlyniadau
- Welsh Black Cattle Society., 1 canlyniadau
- Church of England. Diocese of Saint David's. Saint David's Archdiaconal Board of Education., 1 canlyniadau
- John Harvey & Sons (Firm), 1 canlyniadau
- Barham family, of Trecwn -- Archives, 1 canlyniadau
- Pob un
- Administration of estates -- Wales -- Carmarthenshire, 1 canlyniadau
- Administration of estates -- Wales -- Pembrokeshire, 1 canlyniadau
- Administration of estates -- Wales -- Ceredigion, 1 canlyniadau
- Church lands -- Wales -- St David's., 1 canlyniadau
- Coal mines and mining -- Wales -- Cross Hands, 1 canlyniadau
- Botanists -- Wales -- Diaries., 1 canlyniadau
- Botanists -- Wales -- Archives., 1 canlyniadau
