Article, 11.04.1984
Article, 15.04.1984(?)
Letter, V. A. Polushkin->A.P. Ershov, 12.11.1984
Letter, A.P. Ershov->V. A. Polushkin, 06.05.1985In reply to the letter of 12.11.1984 the author informs of his interest in publication of the article "Automation of employees work" as separate broshure. /Handwritten and typewritten text./
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