Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Evans, Evan Price, 1880-1959, 7 canlyniadau
- Richards, Mary, 1885-1977, 2 canlyniadau
- Vaughan, Irene 1890-1993, 2 canlyniadau
- Evans, Evan Price, 1880-1959 -- Correspondence., 2 canlyniadau
- Vaughan, Irene, 1890-1993 -- Correspondence., 2 canlyniadau
- Chater, A. O. -- Correspondence., 1 canlyniadau
- Benoit, Peter Michael, 1931-, 1 canlyniadau
- Condry, Penny, 1922-, 1 canlyniadau
- Ratcliffe, Derek, 1929- -- Correspondence., 1 canlyniadau
- Ratcliffe, Derek, 1929-, 1 canlyniadau
- Pob un
- Garden ecology -- Wales -- Ynys Edwin (Cardiganshire), 1 canlyniadau
- Plants -- Folklore, 1 canlyniadau
- Harriers, 1 canlyniadau
- Lakes -- Ireland, 1 canlyniadau
- Phoenicurus phoenicurus, 1 canlyniadau
- Mountain ecology -- Wales -- Cader Idris., 1 canlyniadau
- Mountain ecology -- Wales -- Plynlimon., 1 canlyniadau
- Mountain ecology -- Wales -- Snowdonia., 1 canlyniadau
- Mountain ecology -- Wales, South., 1 canlyniadau
- Plants -- Wales -- Great Orme, 1 canlyniadau
