Original standard ASTM C638-20 in PDF full version. Additional info + preview on request
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Original standard ASTM C639-24 in PDF full version. Additional info + preview on request
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Original standard ASTM C64-72 (1977) in PDF full version. Additional info + preview on request
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Original standard ASTM C640-83 in PDF full version. Additional info + preview on request
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Original standard ASTM C641-23 in PDF full version. Additional info + preview on request
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Original standard ASTM C642-21 in PDF full version. Additional info + preview on request
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