للحصول على مزيد من المعلومات أنظر فيFRTR 2002; Rahuman and others 2000; UNEP 1995b; UNEP 1998; UNEP 2001; United States Army Corps of Engineers 2003.
For further information see FRTR 2002; Rahuman and others 2000; UNEP 1995b; UNEP 1998; UNEP 2001; United States Army Corps of Engineers 2003.