Letter, M. Fidler->A.P. Ershov, 14.01.1963
Letter, R. Goodman->A.P. Ershov, 09.01.1963
Letter, Captain Maxwell->A.P. Ershov, 06.02.1963
Letter (hand-written), J. Raichl->A.P. Ershov, 14.02.1963
Letter, J. Birmingham->A.P. Ershov, 26.02.1963
Letter, J. K. Iliffe->A.P. Ershov, 08.02.1963
Covering letter, R. Goodman->A.P. Ershov, 14.03.1963
Letter, A. J. Lohwater->A.P. Ershov, 14.02.1963
Letter, P. Campbell->A.P. Ershov, 20.03.1963
Letter, M. Fidler->A.P. Ershov, 26.03.1963
Letter, H. D. Hasky->A.P. Ershov, 21.03.1963
Information, 23.04.1963
Letter, T. Frej->A.P. Ershov, 17.06.1963
Letter with attachment, M. Woodger ->A.P. Ershov, 21.06.1963Information about the IFIP Congress in New York with request to participate in the PC activities on one of the Congress subject areas; enclosed is the firt Draft Programme Plan of the subject area in question
Letter, D. L. Slotnick->A.P. Ershov, 11.04.1963
Letter, F. G. Duncan->A.P. Ershov, 15.05.1963
Letter, H. Bekic->A.P. Ershov, 20.05.1963
Letter, H. D. Hasky->A.P. Ershov, 24.05.1963
Letter, D. L. Slotnick->A.P. Ershov, 10.06.1963
Letter, M. L. Juncosa->A.P. Ershov, 24.06.1963
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