00492naa#a2200169#i#450# EN\INFRA-M\bibl\7978 20260127232023.2 2308-4898 20151130b2015####ek#y0engy0150####ca RUS RU Americanization of Russian Geometric Education and Descriptive Geometry Journal article Moscow INFRA-M Academic Publishing LLC. 2015 8 с. Journal article local Sal'kov N. A. zh-szf.ru