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1001 задача для умственного счета

authorRachinskii, Sergei Aleksandrovich
downloadpg16527.pdb (95K)
languageRussian
categoriesWord problems (Mathematics)
Mathematics -- Problems, exercises, etc.
QA: Mathematics
alternative title1001 tasks for mental calculation
copyright statusPublic domain in the USA.
sourceProject Gutenberg
EBook #16527
2005-08-14


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