GOST R 21.101-2020
System of design documentation for construction. Main requirements for design and working documentation
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GOST R 21.101-2020
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GOST R 21.101-2020
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GOSTR
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GOST R 21.101-2020
GOST R 21.101-2020 history
1970
GOST R 21.101-2020
System of design documentation for construction. Main requirements for design and working documentation
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