Turkmenistan standards PDF

Original standard WRC 166-1971 in PDF full version. Additional info + preview on request

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Original standard WRC 167-1971 in PDF full version. Additional info + preview on request

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Original standard WRC 168-1971 in PDF full version. Additional info + preview on request

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Original standard WRC 169-1972 in PDF full version. Additional info + preview on request

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Original standard WRC 170-1972 in PDF full version. Additional info + preview on request

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Original standard WRC 171-1972 (1976) in PDF full version. Additional info + preview on request

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