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THE BIOLOGY OF THE CORN LEAF APHID, RHOPALOSIPHUM MAIDIS (FITCH), AS AFFECTED BY RESISTANT AND SUSCEPTIBLE VARIETIES, HYBRIDS AND SELECTIONS OF SORGHUMS, SORGHUM VULGARE, PERS.

CARTIER, JEAN JACQUES.   Kansas State University ProQuest Dissertations Publishing,  1956. 0015907.