STM PDF

Original standard ISO R 1231-1970 in PDF full version. Additional info + preview on request

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Original standard ISO R 1260-1970 in PDF full version. Additional info + preview on request

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Original standard ISO R 1468-1970 in PDF full version. Additional info + preview on request

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Original standard ISO R 1480-1970 in PDF full version. Additional info + preview on request

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Original standard ISO R 1551-1970 in PDF full version. Additional info + preview on request

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Original standard ISO R 1661-1971 in PDF full version. Additional info + preview on request

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