00541naa#a2200169#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200013900102210005000241215001000291608002700301700002900328856001400357EN\\bibl\1102320260527145937.3##a1997-3225##a20160318b2016####ek#y0engy0150####ca0#aRUS##aRU1#aSPRING WHEAT CLOGGING BY CONVOLVULUS ARVENSIS INFLUENCE FOR PRODUCTIVITY INDICATORS IN FOREST-STEPPE OF SAMARA REGIONeJournal article1#aKinelcSamara State Agrarian Universityd2016##a2 с.##aJournal article2local#1aSharapovgIvan Ivanovich4#azh-szf.ru