by Khalifa B.A.A
Published in Veterinary Medical Journal, Cairo Univ (1993)

by Soliman M.M, Ahmed A.A, El Mahdy M.M, Khalifa B.A.A
Published in Veterinary Medical Journal (1988)

by Khalifa, B.A.A, El-Marsafawy, S. (Cairo Univ. (Egypt). Faculty of Veterinary Medicine)
Published in Benha Veterinary Medical Journal (Egypt) (1993)

by Khalifa, B.A.A, Hafez, N.M, Ahmed, Z.A. (Cairo Univ. (Egypt). Faculty of Veterinary Medicine)
Published in Zagazig Veterinary Journal (Egypt) (1993)

by Abdel Aziz, S.A. (Cairo Univ. (Egypt). Faculty of Veterinary Medicine), Soliman, M.M, Ahmed, A.A, Khalifa, B.A.A
Published in Veterinary Medical Journal (Egypt) (1988)

by Khalifa, B.A.A, Salem, F.M.S. (Cairo Univ. (Egypt). Faculty of Veterinary Medicine), Awad, Y.L, Abd-El-Khalek, M.M
Published in Zagazig Veterinary Journal (Egypt) (1993)

by Ahmed, A.A, Soliman, M.M, Younis, M, Zaki, A, Khalifa, B.A.A
Published in Archiv fur experimentelle Veterinarmedizin (01.11.1988)