00530naa#a2200169#i#450# EN\INFRA-M\bibl\69252 20241202115429.1 2500-0489 20230626b2023####ek#y0engy0150####ca RU The role of descriptive geometry in technical education Journal article Moscow INFRA-M Academic Publishing LLC. 2023 6 с. Journal article local Начертательная геометрия. 514.18 Sal'kov N. A. zh-szf.ru