00514naa#a2200181#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200007100102210006100173215001000234608002700244675002000271700002000291856002100311EN\\bibl\7695320260320130356.5##a1819-4036##a20120425b2012####ek#y0engy0150####ca0#aRUS##aRU1#aPERIODIZATION ISSUES IN FOREIGN LANGUAGE TEACHINGeJournal article1#aKrasnoyarskcKrasnoyarsk State Agrarian Universityd2012##a0 с.##aJournal article2local##a. 373(091)zRUS#1aLevchenkogO Yu4#akgau.editorum.ru