Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Elis-Thomas, Dafydd, 1946-, 1 canlyniadau
- Pwyllgor Datblygu Addysg Gymraeg., 1 canlyniadau
- Prosiect Addysg Ddwyieithog y Cyngor Ysgolion., 1 canlyniadau
- Stephens, Thomas Llewellyn., 1 canlyniadau
- Rhieni Dros Addysg Gymraeg (Organization), 1 canlyniadau
- Cymdeithas Wyddonol Genedlaethol., 1 canlyniadau
- Pob un
- Welsh Joint Education Committee., 2 canlyniadau
- University of Wales., 1 canlyniadau
- Elis-Thomas, Dafydd, 1946- -- Archives., 1 canlyniadau
- Pwyllgor Datblygu Addysg Gymraeg -- Archives., 1 canlyniadau
- Great Britain. Welsh Office. Education Dept., 1 canlyniadau
- Curriculum Council for Wales., 1 canlyniadau
- Welsh Language Board., 1 canlyniadau
- Rhieni Dros Addysg Gymraeg (Organization)., 1 canlyniadau
- Urdd Gobaith Cymru., 1 canlyniadau
- Emrys, Dewi, 1881-1952, 1 canlyniadau
- Pob un
- Education, Bilingual -- Wales., 6 canlyniadau
- Education -- Wales., 2 canlyniadau
- Welsh language -- Government policy -- Wales., 2 canlyniadau
- Welsh language -- Study and teaching -- Wales., 2 canlyniadau
- Welsh language -- Usage., 2 canlyniadau
- Politicians -- Wales -- Correspondence., 1 canlyniadau
- Great Britain -- Politics and government -- 20th century, 1 canlyniadau
- Political parties -- Wales., 1 canlyniadau
- Welsh literature -- 20th century, 1 canlyniadau
- Broadcasting -- Wales., 1 canlyniadau
