Letter of 26 August 1964 from the state enterprise PTHZ VARIMEX, Polish Foreign Trade Association, to Katedra Fototechniki in Wrocław.

The content of the letter concerned information on optical graininess meter ["granulometr"], a scientific instrument manufactured by Katedra Fototechniki of Technical University of Wroclaw - its price, delivery time and quantities produced, a data for a possible purchaser from Soviet Union who showed interest in the device.

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Lundi 12 Août 2019

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