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1983 | |
Letter, A.P. Ershov->V. I. Salikovsky, 09.09.1983
Letter, S. S. Lavrov->A.P. Ershov, 18.09.1983
Letter, 29.09.1983
Letter, G. B. Kezling->A.P. Ershov..., 04.11.1983
Information, 10.11.1983
Invitation, I. V. Velbitsky->A.P. Ershov, 22.11.1983
Letter, J. E. Allakhverdiev->A.P. Ershov, 24.11.1983
Note, S.B. Pokrovsky->A.P. Ershov, 07.12.1983
Information letter, 13.09.1985
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Initial order | In alphabetical order | By date |
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