00612naa#a2200193#i#450# EN\INFRA-M\bibl\2137 /en/manage/index 20241130001319.6 2308-4898 20140303b2014####ek#y0engy0150####ca RUS RU Status and Trends of Geometrical-Graphic Training as a Component of Engineering Education in Bulgaria Journal article Moscow INFRA-M Academic Publishing LLC. 2014 7 с. Journal article local Popov M. Leparov M. Nikolaevich test.editorum.ru /en/manage/index