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1Trafodyn Cynhadledd LlyfrCyhoeddwyd 1987“...American Society of Mechanical Engineers. Heat Transfer in Energy Systems Committee (K-6)...”
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2LlyfrCyhoeddwyd 1988“...American Society of Mechanical Engineers. Heat Transfer in Energy Systems Committee (K-6)...”
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3Trafodyn Cynhadledd LlyfrCyhoeddwyd 1994“...American Society of Mechanical Engineers. Heat Transfer in Energy Systems Committee (K-6)...”
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4Trafodyn Cynhadledd LlyfrCyhoeddwyd 1990“...American Society of Mechanical Engineers. Heat Transfer in Energy Systems Committee (K-6)...”