GOST 21.102-1979
System of design documents for construction. General data on working drawings
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GOST 21.102-1979
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GOST 21.102-1979
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GOST 21.102-1979
GOST 21.102-1979 history
1970
GOST 21.102-1979
System of design documents for construction. General data on working drawings
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