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Andrei Ershov
in Russian
Post -Ershov Summer schools
Archive
School Informatics
All-Union Schools of Young Programmers (YPSS)
Post -Ershov Summer schools
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Возр.
Убыв.
Letter,
05.01.1989
Information letter,
01.04.1991
Information,
01.09.1990
Memo,
01.06.1990
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