Ibrahim, Mohamed A. Association tests estwern chromosomal interchanges in mazie and resistance to the European corn borer [microfiche]/ Mohamed A. Ibrahim. - 1952. - 65, [1] leaves : ill. ; 30 cm. "November 1952". Thesis (Ph.D.) -- Ninnesota University, 1952. Includes bibliographical reference (leaves 60-61) Microfiche. Cairo, Egypt : ASUNET, 2 microfiche : negative. Summary in Arabic. Subjects--Topical Terms: Corn--Disease and pest resistance.European corn borer--Control.Chromosomes.Corn--Genetic engineering.