by Abdul-Galil, A.A, El-Khawaga, A.A.H. (Zagazig Univ. (Egypt). Faculty of Agriculture), Thabet, E.M.A, Sobieh, S.E.S
Published in Zagazig Journal of Agricultural Research (Egypt) (01.05.1995)

by Geweifel, H.G.M, El-Khawaga, A.A.H. (Zagazig Univ. (Egypt). Faculty of Agriculture)
Published in Zagazig Journal of Agricultural Research (Egypt) (01.11.1991)

by Ghanem, S.A.I, El-Khawaga, A.A.H. (Zagazig Univ. (Egypt). Faculty of Agriculture)
Published in Zagazig Journal of Agricultural Research (Egypt) (01.09.1991)

by El-Khawaga, A.A.H. (Zagazig Univ. (Egypt). Faculty of Agriculture), Zeiton, O.A.A, Ibrahim, A.A
Published in Zagazig Journal of Agricultural Research (Egypt) (01.12.1986)