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1Trafodyn Cynhadledd LlyfrCyhoeddwyd 1973“...American Society of Mechanical Engineers. Applied Mechanics Division. Shock and Vibration Committee...”
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2LlyfrCyhoeddwyd 1963“...American Society of Mechanical Engineers. Applied Mechanics Division. Shock and Vibration Committee...”
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3Trafodyn Cynhadledd LlyfrCyhoeddwyd 1960“...American Society of Mechanical Engineers. Applied Mechanics Division. Shock and Vibration Committee...”