System of ensuring of geometrical parameters accuracy in construction. Main principles
NORMA vydána dne 1.7.1981
Designation standards: GOST 21778-81
Note: NEPLATNÁ
Publication date standards: 1.7.1981
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST