Lubenets T.G. Sbornik arifmeticheskikh zadach, zaklyuchayushchikh v sebe dannye preimushchestvenno iz selskogo byta./Lubenets T.G. Compilation of arithmetic problems consisting mainly of data from rural life. In Russian (ask us if in doubt) - landofmagazines.com

TransliterationLubenets T.G. Sbornik arifmeticheskikh zadach, zaklyuchayushchikh v sebe dannye preimushchestvenno iz selskogo byta.

In EnglishLubenets T.G. Compilation of arithmetic problems consisting mainly of data from rural life. In Russian (ask us if in doubt)

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