Zvezda signed document-file: testing lunar spacesuit Krechet backpack closing system

Zvezda laboratory file, consists of 19 pages: 11 pages with information containing handwritten formulas and calculations and 8 pages of diagrams for the thermal mode of operation for the lunar spacesuit Krechet backpack closing system and of tension lever of oxygen's pulley for the lunar spacesuit Krechet. The file signed by the chief of brigade No.16 Livshitz and engineer Sharapov, dated December 29, 1967, As well the document signed by the chief of KB-1 Galperin.

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