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1LlyfrCyhoeddwyd 1985“...ASTM Committee D-2 on Petroleum Products and Lubricants...”
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2LlyfrCyhoeddwyd 1963“...ASTM Committee D-2 on Petroleum Products and Lubricants...”
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3Trafodyn Cynhadledd LlyfrCyhoeddwyd 1971“...ASTM Committee D-2 on Petroleum Products and Lubricants...”
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4LlyfrCyhoeddwyd 1993“...ASTM Committee D-2 on Petroleum Products and Lubricants...”
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5Trafodyn Cynhadledd LlyfrCyhoeddwyd 1962“...ASTM Committee D-2 on Petroleum Products and Lubricants...”
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6LlyfrCyhoeddwyd 1987“...ASTM Committee D-2 on Petroleum Products and Lubricants. Subcommittee B on Automotive Lubricants...”
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7LlyfrCyhoeddwyd 1972“...ASTM Committee D-2 on Petroleum Products and Lubricants. Technical Division B on Automotive...”
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8Trafodyn Cynhadledd LlyfrCyhoeddwyd 1966“...ASTM Committee D-2 on Petroleum Products and Lubricants...”