TDS PDF

Original standard API Publ 421-1990 in PDF full version. Additional info + preview on request

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Original standard API Publ 421-1990 errata 1992 in PDF full version. Additional info + preview on request

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Original standard API Publ 422-1994 in PDF full version. Additional info + preview on request

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Original standard API Publ 4261-2001 in PDF full version. Additional info + preview on request

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Original standard API Publ 4262-1990 in PDF full version. Additional info + preview on request

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Original standard API Publ 4296-1978 in PDF full version. Additional info + preview on request

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