WITHDRAWN GOST 21489-76 1.1.1977 preview

GOST 21489-76

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



STANDARD published on 1.1.1977


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The information about the standard:

Designation standards: GOST 21489-76
Note: WITHDRAWN
Publication date standards: 1.1.1977
SKU: NS-385481
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Russian technical standard
Category: Technical standards GOST

Annotation of standard text GOST 21489-76 :

Implemented changes and corrections:

Amd. 3.81

Amd. 4.86

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