by El Basiony A.Z, El Ashry M.A, El Sayaad G.A, Salem F.A
Published in Annals of Agricultural Science, Moshtohor (1994)

by Khalil, I.A, Khalil, H.H, El-Sayaad, G.A, Radman, M.A. (Zagazig Univ., Moshtohor (Egypt). Faculty of Agriculture)
Published in Annals of Agricultural Science, Moshtohor (Egypt) (01.03.1995)

by Abdella, M.M, El-Sayaad, G.A. (Zagazig Univ., Moshtohor (Egypt). Faculty of Agriculture), Khafagi, E.A, Khir, A.M
Published in Mansoura Journal of Agricultural Sciences (Egypt) (01.07.1993)

by Afifi F.A, El oksh H.A, El Sherbiny A.A, El Sayaad G.A
Published in Egyptian Journal of Animal Production (1979)

by Afifi, E.A, Abdella, M.M, El-Sayaad, G.A, El-Madhagi, K.S.S. (Zagazig Univ., Moshtohor (Egypt). Faculty of Agriculture)
Published in Annals of Agricultural Science, Moshtohor (Egypt) (01.12.1990)

by El-Oksh, H.A, Afifi, E.A, El-Sherbiny, A.A, Ragab, M.T, El-Sayaad, G.A. (Al-Azhar Univ., Cairo (Egypt). Faculty of Agriculture)
Published in Egyptian Journal of Animal Production (Egypt) (1979)