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Andrei Ershov
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"Informatics-10": Publishing matters
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School Informatics
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"Informatics-10": Publishing matters
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Возр.
Убыв.
Letter,
11.05.1986
№ 255(207) - дубль
Letter,
19.06.1986
№ 255(205) - дубль
Letter,
21.07.1986
№ 255(203) - дубль.
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