K. E. U. N. E. P. - Nairobi,
« Desk study on the environment in the occupied Palestinian territories ». UNEP, United Nations Environment Programme, Nairobi, Kenya, p. 188 p. : fig., maps., photogr., 2003.
J. Wessels,
« Qanats in Syria ease the water shortage »,
Waterlines, an international journal of water, sanitation and waste, p. p. 8-10 : 1 fig., 3 photogr., 2003.