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FACULTATIVE PRODUCTION OF ALATES BY GREENBUG AND CORN LEAF APHID, AND IMPLICATIONS IN APHID POPULATION DYNAMICS (HOMOPTERA: APHIDIDAE)SUMMY KR; GILSTRAP FE.1983; J. KANS. ENTOMOL. SOC.; USA; DA. 1983; VOL. 56; NO 3; PP. 434-440; BIBL. 15 REF.Article