Hem, John D. 1916- Study and interpretation of the chemical characteristics of natural water / John D. Hem. - Second edition - Washington : U.S. Govt. Print. Off., 1975. - xiv, 363 p. ; il. ; 24 cm. - United States. Geological Survey. Water-supply paper ; 1473 . Bibliografía: pp. 338-358. Inglés Subjects--Index Terms: Water chemistry Química del agua Dewey Class. No.: 551.48