Original standard ISO 1897-11-1983 in PDF full version. Additional info + preview on request
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Original standard ISO 1897-12-1983 in PDF full version. Additional info + preview on request
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Original standard ISO 1897-13-1983 in PDF full version. Additional info + preview on request
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Original standard ISO 1897-2-1977 in PDF full version. Additional info + preview on request
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Original standard ISO 1897-3-1977 in PDF full version. Additional info + preview on request
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Original standard ISO 1897-4-1977 in PDF full version. Additional info + preview on request
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