00585naa#a2200193#i#450# EN\INFRA-M\bibl\80995 20260123024408.5 2308-4898 20240927b2024####ek#y0engy0150####ca RU Design problems in descriptive geometry course Journal article Moscow INFRA-M Academic Publishing LLC. 2024 13 с. Journal article local Математика. 51 Kokorin Mihail Stanislavovich Markova Tat'yana Vladimirovna Nikitina T. A. zh-szf.ru