الفهرس 
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Abstract
The Author wishes to express his gratitude and appreciation to Prof. Dr. Aida M.
Allam Professor of Pomology and Head of Natural Resources Evaluation
Department, Minufiya University – Sadat Branch for her supervision, sincere
advices and her continuous and valuable suggestions during research work,
writing and revising this manuscript.
The Author also hopes to express his appreciation to Dr. Ashraf Zahran Lecturer
of Air Pollution - Natural Resources Evaluation Department, Minufia University –
Sadat Branch for his supervision, valuable assistance and great support during all
steps of this study.
The Author also hopes to express his appreciation to Dr. Faissal Fadel Ahmed
– Prof. of Pomology & Head of Horticulture Dept. Agriculture Faculty – El Minia
Univ. for his supervision, valuable assistance and great support during all steps of
the study.
The Author wishes to express his deep gratitude to colleagues of
Environmental and Studies Researches Institute and all staff members of the
Natural Resources Evaluation Department for their technical support and
encouragement.
The Author expresses his deepest thanks to Mr. Ahmed El Aguizy and all
colleagues at El Aguizy International Company for their help in facilitating his goals
and study.
The Author also appreciates the help given by his family and their patient to
finish his work and study.