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Andrei Ershov
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Traveller's dossier
Archive
Scientific foreign trips
Scientific trip to the USA (1973)
Traveller's dossier
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Order
Возр.
Убыв.
Justification of Necessity,
01.07.1973
Directives,
01.07.1973
Letter,
01.07.1973
283, 1-2
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