Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Williams-Ellis, Clough, 1883-1978, 1 canlyniadau
- Lloyd George, Megan, 1902-1966, 1 canlyniadau
- Vaughan-Thomas, Wynford, 1908-1987, 1 canlyniadau
- White, Eirene, 1 canlyniadau
- Campaign for the Protection of Rural Wales -- Archives, 1 canlyniadau
- Salmon, H. Morrey (Harry Morrey), 1 canlyniadau
- Vaughan, H.R.H. 1893-1978, 1 canlyniadau
- Williams-Ellis, Cecily, 1899-1992, 1 canlyniadau
- Pob un
- Environmental protection -- Wales, 1 canlyniadau
- Landscape protection -- Wales, 1 canlyniadau
- Regional planning -- Wales, 1 canlyniadau
- Applied ecology -- Wales, 1 canlyniadau
- Economic development -- Environmental aspects -- Wales, 1 canlyniadau
- Environmental monitoring -- Wales, 1 canlyniadau
