GB 2923-1982

Methods for determination of speed of black-and-white photographic negative materials for still and motion-picture photography

NORM herausgegeben am 1.1.1982

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The information about the standard:

Designation standards: GB 2923-1982
Note: UNGÜLTIG
Publication date standards: 1.1.1982
Country: Chinese technical standard
Kategorie: Technische Normen GB