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Focal distances of photographic enlarging and projecting lenses
STANDARD published on 21.8.1985
Designation standards: ČSN 190020
Classification mark: 190020
Catalog number: 25329
Publication date standards: 21.8.1985
SKU: NS-119881
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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