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Letter of 8 June 1965 from the state enterprise PTHZ VARIMEX, Polish Foreign Trade Association, to Katedra Fototechniki in Wrocław.
The content of the letter concerned further information on optical graininess meter ["granulometr"], a scientific instrument manufactured by Katedra Fototechniki of Technical University of Wroclaw - regarding the calculation of packaging and transport costs to a purchaser from Soviet Union.
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