| Letter with attachment, A. K. Romanov->A.P. Ershov, 30.12.1987 Informing of the visit of the USA NAS delegation; enclosed is telex from the American party with invitation for Ershov to be a speaker at the symposium
Working Notes, 11.01.1988to-do list for the Moscow trip
Notes, 11.01.1988taken during the symposium
Invitation, 11.01.1988to Acad. A.P. Ershov and wife to the reception held by the USA Ambassador Extraordinary and Plenipotentiary
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