M. D. Palmer,
Water quality modeling : a guide to effective practice. Washington, DC, USA: World Bank, 2001, p. xv, 157 p. : 37 fig., 2 tab.
M. de Villiers,
Water : the fate of our most precious resource, Paperback. Boston, MA, USA: Houghton Mifflin Company, 2001, p. xvi, 352 p. : maps.