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Participation in the SBAS Presidium activities
Decisions
General Meetings of SB ASResolutions, invitations
SB AS documents
Agenda, 22.02.1988
Agenda, 08.07.1988
Agenda, 10.11.1977
Article, 25.02.1982
Article, 25.02.1982
Covering Letter, L. A. Kotel'nikova->A.P. Ershov, 10.10.1988
Covering Letter, 30.05.1985
Covering Letter, L. A. Kotel'nikova->A.P. Ershov, 18.08.1988
Decision (draft), 17.03.1982
Information letter, 18.02.1976
Information letter, 03.03.1985
Invitation, 01.11.1977(?)
Invitation, I. I. Geitsi ->A.P. Ershov, 09.01.1972
Letter, 02.02.1988
Letter, 29.11.1976
Letter, A. K. Romanov->A.P. Ershov, 25.10.1972
Letter, 14.11.1972
Letter, 09.11.1972
Letter, V. A. Koptyug->A.P. Ershov, 16.01.1986
Letter, V. A. Lyubimova->A.P. Ershov, 26.09.1975
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