by Ballal, M.E., El Siddig, E.A., Elfadl, M.A., Luukkanen, O.
Published in Journal of arid environments (01.10.2005)

by El Siddig, E.A, Hetherington, J. C
Year of Publication 1985

by Ballal, M.E, El Siddig, E.A, Elfadl, M.A, Luukkanen, O
Published in Agroforestry systems (01.01.2005)

by El Siddig E.A
Published in University of Khartoum Journal of Agricultural Sciences (1994)

by El Siddig, E.A
Year of Publication 1985

by Hassan, S.G.,University of Khartoum, Khartoum (Sudan). Desertification and Desert Cultivation Studies Institute, Musnad, H.A.,University of Sudan for Science and Technology, Khartoum (Sudan). Faculty of Range Sciences and Forestry, El-Siddig, E.A.,University of Khartoum, Khartoum (Sudan). Faculty of Forestry
Year of Publication 2004

by El-Tayeb, A.M, El-Siddig, E.A, Erabi, E.B
Published in University of Khartoum Journal of Agricultural Sciences (Sudan) (01.07.1993)