Ammar,Mohamed Ibrahim Farag. Studeis on dieback disease of grape trees [microform]/ دراسات مرضية على موت أفرع أشجار العنب. Mohamed Ibrahim Farag Ammar. - 1998. - 96,3Leaves : ill. ; 30 cm. Thesis (M.S.)--Cairo University,1998. Includes bibliographical references (leaves 79-96) Microfiche. Cairo, Egypt : ASUNET, 2 microfiches:negative. Summary in Arabic. Subjects--Topical Terms: Grapes--Diseases and pests--Biological control.