El Bouhssini, Mustapha2015-12-312015-12-311986http://hdl.handle.net/2097/27624Call number: LD2668 .T4 1986 E42Hessian fly.Wheat--Diseases and pests--Morocco.A study of Hessian fly, Mayetiola destructor (Say), biotypes and resistance in wheats in MoroccoTextMasters theses