00580naa#a2200193#i#450# EN\INFRA-M\bibl\396 20250108094802.3 2308-4898 20130725b2013####ek#y0engy0150####ca RUS RU Organization of educational process on descriptive geometry in Penza state technological academy Journal article Moscow INFRA-M Academic Publishing LLC. 2013 3 с. Journal article local Yudina Elena Nesterenko Leonid Burlov V. zh-szf.ru