1001 задача для умственного счета [electronic resource]
Rachinskii, Sergei Aleksandrovich
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Main title:
1001 задача для умственного счета [electronic resource] / Sergei Aleksandrovich Rachinskii
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Imprint:
[Place of publication not identified] : Project Gutenberg, [date of publication not identified]
Collation:
1 online resource (1 text file)
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Mode of access: Internet
Language:
Russian
BRN:
3928924
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