00559naa#a2200181#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200012300108210005100231215001000282608002700292700001500319700002800334856001500362EN\INFRA-M\bibl\213720241212045001.4##a2308-4898##a20140303b2014####ek#y0engy0150####ca0#aRUS##aRU1#aStatus and Trends of Geometrical-Graphic Training as a Component of Engineering Education in BulgariaeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a7 с.##aJournal article2local#1aPopovgM. #1aLeparovgM. Nikolaevich4#anaukaru.ru