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1Cyhoeddwyd 1987“...Dept. of Survey and Land Information],...”
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2Cyhoeddwyd 1971“...Information Dept. of the Niu Hebredis Nasonal Pati,...”
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3
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4Cyhoeddwyd 1965“...Information and Publicity Services Division, Tourist and Publicity Dept,...”
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5
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6Cyhoeddwyd 1988“...Information Office for Local Government Reform, Dept. of Internal Affairs,...”
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7
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8Cyhoeddwyd 1984“...Information Services Division, Dept. of Lands and Survey for the National Parks and Reserves Division,...”
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9
Dogfen y Llywodraeth Cylchgrawn