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1Cyhoeddwyd 1989“...Policy Division, Ministry of Energy,...”
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2Cyhoeddwyd 1989“...Policy Division, Ministry of Energy,...”
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3Cyhoeddwyd 1986“...Policy and Regulations Division of the Ministry of Energy,...”
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4Cyhoeddwyd 1986“...Policy and Regulations Division, Ministry of Energy,...”
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5Cyhoeddwyd 1986“...Ministry of Energy, Policy and Regulations Division,...”
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6Cyhoeddwyd 1986“...Policy and Regulations Division of the Ministry of Energy,...”
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7Cyhoeddwyd 1996“...Energy Policy Group, Energy & Resources Division, Ministry of Commerce,...”
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8Cyhoeddwyd 1997“...Energy Policy Group, Energy & Resources Division, Ministry of Commerce,...”
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9Cyhoeddwyd 1991“...Resources Policy, Energy and Resources Division, Ministry of Commerce,...”
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10Cyhoeddwyd 1992“...Resources Policy, Energy and Resources Division, Ministry of Commerce,...”
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11Cyhoeddwyd 1994“...Energy Research and Information Unit, Energy Policy Group, Energy and Resources Division, The Ministry,...”
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12gan Biggar, Kevin“...Energy Impacts Unit, Energy Policy Group, Energy and Resources Division, Ministry of Commerce,...”
Cyhoeddwyd 1995
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13gan Waring, P. (Peter), 1934-“...Research and Information Unit, Energy Policy Group, Energy and Resources Division, The Ministry,...”
Cyhoeddwyd 1994
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14Cyhoeddwyd 1992“...Research and Information Unit, Energy Policy Group, Energy and Resources Division, The Ministry,...”
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15gan Chivers, Matthew“...Energy Modelling and Statistics Unit, Energy Policy Group, Energy and Resources Division, Ministry of Commerce,...”
Cyhoeddwyd 1995
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16Cyhoeddwyd 1995“...Energy Modelling and Statistics. Unit, Energy Policy Group, Energy and Resources Division, Ministry of Commerce....”
Cyfresol -
17Cyhoeddwyd 1995“...Energy Modelling and Statistics Unit, Energy Policy Group, Energy Resources Division, Ministry of Commerce,...”
Cyfresol