Letter with a Cover, A .Salwicki->A.P. Ershov, 27.12.1977
Covering letter, 14.10.1977to the ordered reports
Letter, 11.12.1977request to check and update if necessary the mailing list recipirent information
Post card, Unknown Author->A.P. Ershov, 18.06.1977Asking permission to deliver the book "ALGOL 68 - Daten organisation".
Letter, ->A.P. Ershov, 04.01.1977
Letter, B. A. Wichmann->A.P. Ershov, 06.01.1977
Letter, A.A. Klas->A.P. Ershov, 10.01.1977
Letter, R. Reddy->A.P. Ershov, 06.01.1977
Letter, D. Bjorner->A.P. Ershov, 24.01.1977
Letter, P. A. Samet->A.P. Ershov, 26.01.1977
Letter, 19.01.1977
Letter, R. D. Parslow->A.P. Ershov, 24.01.1977
Letter, B. Moller-Pedersen->A.P. Ershov, 20.12.1977in reply to the letter of November 29, 1977: the author is glad to know that the addresse does not object to the existence of another project called Beta
Letter, J. Gruska->A.P. Ershov, 03.02.1977
Letter, J. W. de Bakker->A.P. Ershov, 02.02.1977
Letter, J. M. Gallitano->A.P. Ershov, 26.01.1977
Letter, G. Moors->A.P. Ershov, 07.02.1977
Invoice, 31.01.1977for subscription to "Cîmmunications Journal".
Telegram, Yu.D. Shmyglevsky->A.P. Ershov, 15.02.1977Request to call the author in Amsterdam
Letter, W. Dijkhuis->A.P. Ershov, 07.02.1977Unofficial information about publishing the Quality Software Conference Proceedings at North-Holland Publishers
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