00552naa#a2200181#i#450# EN\INFRA-M\bibl\42406 20240503114337.5 2308-4898 20201230b2020####ek#y0engy0150####ca RU The Phenomenon of Descriptive Geometry Existence in Other Student Courses Journal article Moscow INFRA-M Academic Publishing LLC. 2020 12 с. Journal article local Математика. 51 Sal'kov N. A. Kadykova Nina S. naukaru.ru