Fahmy, M. M., H. Gohar, S. A. Ahmed, and M. M. El-Bahi,
"Short communication: Hydatid cyst in the inguinal region of sheep and goat in Egypt. ",
Alex. J. Vet. Sci., vol. 5, issue 1, pp. 463-467, 1989.
Refai, M., Karim, I., El-Seedy, F., W. Awad, and H.: Hamman,
"The specificity and sensitivity of enzyme-linked immunosorbent assay and indirect antibody test in tuberculin positive bovine. ",
J. Egypt. Vet. Med. Ass. , vol. 49, , pp. 203-210 , 1989.
Badr, R. I., M. F. Hassan, J. Bernussou, and A. Y. Bilal,
"Stability and performance robustness for multivariable linear systems ",
Automatica(Journal of IFAC), vol. 25, issue 6, pp. 935-942, 1989.
A.M.Kheir, A. A. Farahat, and S. K. Abadir,
"Studies on the CCN , Heterodera zeae in Egypt : II- Morphometric comparisons of four populations of the corn cyst nematode",
Bull. Zool. Soc., Egyp,, vol. 38, issue 1, pp. 35-40, 1989.
Farahat, A. A., S. K. Abadir, and A.M.Kheir,
"Studies on the CCN , Heterodera zeae in Egypt : III- Post infection developmebt of four populations of the corn cyst nematode.",
Bull. Fac. of Agric., Cairo Univ. , vol. 39, issue 1, pp. 373=379, 1989.
A.M.Kheir, A. A. Farahat, and S. K. Abadir,
"Studies on the CCN , Heterodera zeae in Egypt : IV- Variations in development and reproduction of four different populations on some corn cultivars.",
Bull. Fac. Of Agric., Cairo Univ. , vol. 39, issue 1, pp. 381-388, 1989.
A.M.Kheir, A. A. Farahat, and undefined,
"Studies on the CCN , Heterodera zeae in Egypt: I- Descritive comparisons of four populations of the corn cyst nematode. ",
Bull. Zool. Soc., , vol. 38, issue 1, pp. 25-34, 1989.
Hammam, H., Refai, M., W. Bisping, and G.: Kirpal,
"Studies on the effieciency of absorbed bovine PPD in tuberculin and serological tests.",
J. Vet. Med. B. , vol. 36, , pp. 175-179 , 1989.
Kheir, N. F., S. M. Salem, A. H. Hanafy Ahmed, and O. M. A. El-Shihy,
"Studies on the resistance of Vicia faba varieties to Orobanche crenata Forsk.",
Bull. Fac. Of Agric., Univ. of Cairo, vol. 40, issue 1, pp. 197-212, 1989.
H.H.El-Rahimy, M.K.Sobhy, N.A.El-Dib, A.A.Ali, and G.A.Bassiouni,
"Toxoplasma infection among pregnant women in Makkah, Saudi Arabia. ",
Medical Journal of Cairo University, vol. 57, issue 2, pp. 349, 1989.
El-Asmy, A. A., T. Y. Al-Ansi, M. Mounir, and S. A. Ashour,
"Transition Metal Complexes of 1-Acetylacetone-4-Ethylthiosemicarbazone",
Synthesis and Reactivity in Inorganic and Metal-organic Chemistry , vol. 19, issue 4, pp. 309-320, 1989.