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^ abvan der Leeden, Troise, and Todd, eds., The Water Encyclopedia. Second Edition. Chelsea, MI: Lewis Publishers, 1990, page 196.
^ abcdWright, John W. (ed.); Editors and reporters of The New York Times (2006). The New York Times Almanac (2007 ed.). New York, New York: Penguin Books. p. 64. ISBN0-14-303820-6. ((cite book)): |first= has generic name (help)