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1Cyhoeddwyd 1993“...DE (Series) (American Society of Mechanical Engineers. Design Engineering Division)...”
Trafodyn Cynhadledd Llyfr -
2Cyhoeddwyd 1992“...DE (Series) (American Society of Mechanical Engineers. Design Engineering Division)...”
Trafodyn Cynhadledd Llyfr -
3Cyhoeddwyd 1993“...DE (Series) (American Society of Mechanical Engineers. Design Engineering Division)...”
Trafodyn Cynhadledd Llyfr -
4Cyhoeddwyd 1992“...DE (Series) (American Society of Mechanical Engineers. Design Engineering Division)...”
Trafodyn Cynhadledd Llyfr