by Sharief, A.E, El-Kalla, S.E, Gado, H.E, Abo-Yousef, H.A.E
Published in Australian journal of crop science (01.05.2009)

by El Kalla S.E, El Kassaby A.T
Published in Journal of Agricultural Sciences, Mansoura (1982)

by El Kalla S.E, Momtaz A, Shalaby T.A
Published in Journal of Agricultural Research (1977)

by El Kalla S.E, El Kassaby A.T, Kandil A.A
Published in Journal of Agricultural Sciences, Mansoura (1982)

by Abd El Hafez A.A, El Kalla S.E, Barakat S.A
Published in Journal of Agricultural Sciences, Mansoura (1981)

by El Kalla S.E, El Hindi M.H, Ali A.A
Published in Journal of Agricultural Sciences, Mansoura (1981)

by El Kalla S.E, Abd El Hafez A.E, Barakat S.A
Published in Journal of Agricultural Sciences, Mansoura (1981)

by El Kassaby A.T, El Kalla S.E, Hanna A.S, El Sayed I.O
Published in Journal of Agricultural Sciences, Mansoura (1983)

by El Kalla S.E, Gomaa A.A
Published in Agriculture Research Review (1977)

by Gomaa E.A.A, El Kalla S.E, Khorshid A.M
Published in Zeitschrift fuer Acker und Pflanzenbau (1978)

by Gomaa A.S.A, El Kalla S.E, Gomaa E.A.A
Published in Agriculture Research Review (1978)

by Gomaa E.A.A, El Kalla S.E, Khorshid A.M
Published in Agriculture Research Review (1978)

by Hefni, E.H.M, Rammah, A.M, El-Kalla, S.E. (Faculty of Agriculture, Moshtohor (Egypt))
Published in Zeitschrift fuer Acker- und Pflanzenbau (Germany, F.R.) (1978)