GOST 21489-76

Brown coals, hard coals and anthracites. Classification by ranks and classes according to reflectance index of vitrinite

NORMA vydána dne 1.1.1977

Rusky -
Elektronické PDF (785.10 CZK)

Rusky -

Tištěné (785.10 CZK)

Anglicky a rusky -

Elektronické PDF (1337.30 CZK)

Anglicky a rusky -

Tištěné (1337.30 CZK)

The information about the standard:

Designation standards: GOST 21489-76
Note: NEPLATNÁ
Publication date standards: 1.1.1977
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Russian technical standard
Kategorie: Technické normy GOST

Annotation of standard text GOST 21489-76 :

Implemented changes and corrections:
Amd. 3.81
Amd. 4.86