Ground Water Salinity Reported for 1976 and Israeli Settlements in Gaza - Map - English (1991)
Citation
United Nations (1991) "Ground Water Salinity and Israeli Settlements in the Gaza Strip." UNISPAL, http://unispal.un.org/unispal.nsf/1ce874ab1832a53e852570bb006dfaf6/29856d9a409db50b852571af00644817?OpenDocument, retrieved 26/06/2014.
abbr.: United Nations 1991.