(...) (...)
Handwritten texts are written on both sides of the 1st sheet of paper and on the face of the 2nd sheet. There is an edit in the text: strikethrough, corrections, pencils, including red. The text read as follows: " In the author's report, in 1947, The possible development of the main types of aircraft engines was shown ... "
Creation time: 1950-е yy.
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