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	1.	No cover image available Ecological-toxicological studies on harmful and useful birds in Egyptian crops [microform] / Nagah Hassan Essa. by Essa, Nagah Hassan Publication details: 1993 Dissertation note: Thesis (Ph.D. )--Ain-Shams University, 1993. Other title: دراسة ايكولوجية-توكسيكولوجية علي أهم الطيور الضارة والنافعة في المحاصيل الزراعية Availability: Items available for loan: Main (1)Call number: THESIS S-2782. Place hold Add to cart (remove)
	2.	No cover image available Biological studies on the confused flour beetle, Tribolium confusum Div. [microform] / Nagah Hassan Essa. by Essa, Nagah Hassan Publication details: 1994 Dissertation note: Thesis (M.S.)--Cairo University, 1994. Availability: Items available for loan: Main (1)Call number: THESIS S-3725. Place hold Add to cart (remove)

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