00524naa#a2200169#i#450# EN\INFRA-M\bibl\11983 20251231073606.3 2308-4898 20160618b2016####ek#y0engy0150####ca RUS RU Previous History and Background of Transformation of the Descriptive Geometry in the Engineering Geometry Journal article Moscow INFRA-M Academic Publishing LLC. 2016 7 с. Journal article local Ivanov G. zh-szf.ru