| Announcement, 29.06.1971 of the Novosibirsk WG meeting
Decision, 31.03.1971of the SBAS Presidium about holding the WG 2.1 meeting in Novosibirsk.
Direction, 27.08.1971of the USSR AS Presidium about holding the WG 2.1 meeting in Novosibirsk
Informal Minutes, 05.04.1972of the Meeting.
Information letter, 29.06.1971
Letter, M. Paul->A.P. Ershov, 28.10.1971The author thanks A.Ershov and his colleagues for a hearty welcome during his visit to Akademgorodok to attend the IFIR Working Group meeting
Letter, 13.08.1971Confirmation of the request to book plane tickets for the foreign participants of the WG meting in Novosibirsk
Letter, A.P. Ershov->A. A. Dorodnitsyn, 22.03.1971
Letter, M. Paul->A.P. Ershov, 28.01.1971
Letter, A.P. Ershov->I. I. Scheglov, 30.06.1971
Letter, M. Paul->A.P. Ershov, 17.03.1971
Letter, M. Paul->A.P. Ershov, 26.05.1971
Letter, M. Paul->A.P. Ershov, 08.06.1971
Letter, N. Suzuki->A.P. Ershov, 15.06.1971
Letter, A.P. Ershov->W. L. van der Poel, 26.11.1968
Letter, M. Paul->o the members of IFIP WG 2.1, 22.06.1971
Letter, B. J. Mailloux->A.P. Ershov, 17.06.1971
Letter, M. Paul->A.P. Ershov, 23.06.1971
Letter, M. Paul->A.P. Ershov, 28.06.1971
Letter, M. Paul->A.P. Ershov, 29.06.1971
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