Item no. P3518 (letter)

Type: cover

Country: Poland

Date of use: 7 April 1971

Business stationery (letterhead) used by the Bydgoszcz Photochemical Works FOTON [Bydgoskie Zakłady Fotochemiczne FOTON] in Bydgoszcz (Poland), and addressed to the Institute of Organic and Physical Chemistry at Technical University of Wrocław (Poland). The subject of the content was the matter of sensitometric wedges.