GOST 25346-1989 Basic norms of interchangeability. Unified system of tolerances and fits. General, series of tolerances and fundamental deviations*, 1989-04-19 Update
GOST 25348-1982 Basic norms of interchangeability. Unified system of tolerances and fits. Series of tolerances, basic deviations and tolerance zones for sizes over 3150 mm*, 1982-04-19 Update
GOST 316-1975 Bottom leather. Determination of grade
GOST 938.1-1967 Leather. Method of determination of moisture content
ISO 3378:1975 Leather; Determination of resistance to grain cracking, and of crack index
GOST 938.30-1978 history
1980GOST 938.32-1980 Leather. Method for determination of colour conformity of surface paint to the basic colour of chrome leather