Archive
Domestic trips
Moscow - Leningrad
Card, M. B. Ignatiev->A.P. Ershov, 31.10.1981
Information letter, 02.04.1981
Invitation Card, Organizing Committee->A.P. Ershov, 02.12.1981
Note, 02.12.1981
Note, Unknown Author->A.P. Ershov, 01.12.1981
Notes, 02.12.1981
Notes, 02.12.1981
Working Notes, 28.11.1981-02.12.1981

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