Literaturrecherche

Literatur Helal M (1994) Uptake of heavy metals by crop plants. In: Egyptian-German seminar on environmental research : Cairo, 21 - 23 March 1994. Cairo, p 10

Literatur Helal M, Issa GI (1994) Low input concept for desert agriculture. In: Egyptian-German seminar on environmental research : Cairo, 21 - 23 March 1994. Cairo, p 16

Literatur El Bassam N, El Kafaji A, Popovski D (1972) The quality of ground water, its influence on soil development in southern desert of Iraq. In: International Symposium on New Developments in the Field of Salt Affected Soils. Cairo, pp 273-279