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- Williams, Gwilym Owen, 1 results
- Nicholas, James, 1 results
- Jenkins, Emyr, 1938-, 1 results
- University of Wales., 1 results
- Rees, Alwyn D., 1 results
- Cymdeithas yr Iaith Gymraeg., 1 results
- Hughes, Glyn Tegai, 1 results
- British Broadcasting Corporation., 1 results
- Evans, Gwynfor, 1 results
- Cledwyn of Penrhos, Cledwyn Hughes, Baron, 1916-2001, 1 results
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- Television broadcasting -- Wales., 3 results
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- Traffic signs & signals -- Wales., 1 results
- Census., 1 results
- Demographic surveys -- Wales., 1 results