00547naa#a2200181#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200011500108210005100223215001000274608002700284700001800311700002000329856001600349EN\INFRA-M\bibl\343920240425034037.4##a2308-4898##a20140610b2014####ek#y0engy0150####ca0#aRUS##aRU1#aZero Control as Integral Part of Geometrical and Graphic Disciplines’ Instruction TechniqueeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a4 с.##aJournal article2local#1aMelnykgOlga #1aBudagAntonina 4#ariorpub.com