Shorokh-Trotskiy S. Konvolyut. Arifmeticheskiy zadachnik dlya uchiteley prigotovitelnykh klassov i dlya pervonachalnogo domashnego obucheniya. Arifmeticheskiy zadachnik dlya uchiteley shkol gramoty./Srukh-Trotsky S. Convolutee. Arithmetic problem for teachers of preparatory classes and for initial home schooling. Arithmetic problem for teachers of literacy schools. In Russian - landofmagazines.com

TransliterationShorokh-Trotskiy S. Konvolyut. Arifmeticheskiy zadachnik dlya uchiteley prigotovitelnykh klassov i dlya pervonachalnogo domashnego obucheniya. Arifmeticheskiy zadachnik dlya uchiteley shkol gramoty.

In EnglishSrukh-Trotsky S. Convolutee. Arithmetic problem for teachers of preparatory classes and for initial home schooling. Arithmetic problem for teachers of literacy schools. In Russian

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