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1Trafodyn Cynhadledd
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2Trafodyn Cynhadledd LlyfrCyhoeddwyd 1994“...American Society of Mechanical Engineers. Petroleum Division...”
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3Trafodyn Cynhadledd LlyfrCyhoeddwyd 1995“...American Society of Mechanical Engineers. Petroleum Division...”
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4Trafodyn Cynhadledd LlyfrCyhoeddwyd 1995“...American Society of Mechanical Engineers. Petroleum Division...”
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5Trafodyn Cynhadledd LlyfrCyhoeddwyd 1995“...American Society of Mechanical Engineers. Petroleum Division...”
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6Trafodyn Cynhadledd LlyfrCyhoeddwyd 1992“...American Society of Mechanical Engineers. Petroleum Division...”
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7Trafodyn Cynhadledd LlyfrCyhoeddwyd 1994“...American Society of Mechanical Engineers. Petroleum Division...”
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8Trafodyn Cynhadledd LlyfrCyhoeddwyd 1991“...American Society of Mechanical Engineers. Petroleum Division...”
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9Trafodyn Cynhadledd LlyfrCyhoeddwyd 1992“...American Society of Mechanical Engineers. Petroleum Division...”
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10Trafodyn Cynhadledd LlyfrCyhoeddwyd 1992“...American Society of Mechanical Engineers. Petroleum Division...”
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11Trafodyn Cynhadledd LlyfrCyhoeddwyd 1985“...American Society of Mechanical Engineers. Petroleum Division...”
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12Trafodyn Cynhadledd LlyfrCyhoeddwyd 1992“...American Society of Mechanical Engineers. Petroleum Division...”
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13Trafodyn Cynhadledd LlyfrCyhoeddwyd 1987“...American Society of Mechanical Engineers. Petroleum Division...”
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14Trafodyn Cynhadledd LlyfrCyhoeddwyd 1996“...American Society of Mechanical Engineers. Petroleum Division...”
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15Trafodyn Cynhadledd LlyfrCyhoeddwyd 1991“...American Society of Mechanical Engineers. Petroleum Division...”
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16Trafodyn Cynhadledd LlyfrCyhoeddwyd 1994“...American Society of Mechanical Engineers. Petroleum Division...”
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17Trafodyn CynhadleddCyhoeddwyd 1991“...American Society of Mechanical Engineers. Petroleum Division...”
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18Trafodyn Cynhadledd LlyfrCyhoeddwyd 1995“...American Society of Mechanical Engineers. Petroleum Division...”
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19Trafodyn CynhadleddCyhoeddwyd 1987“...American Society of Mechanical Engineers. Petroleum Division...”
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20Trafodyn Cynhadledd LlyfrCyhoeddwyd 1985“...American Society of Mechanical Engineers. Petroleum Division...”