HAMMER, M. J. (2008). Water and wastewater technology. Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)HAMMER, Mark J. Water and Wastewater Technology. Pearson Prentice Hall, 2008.
Lua MLA (8ú heag.)HAMMER, Mark J. Water and Wastewater Technology. Pearson Prentice Hall, 2008.
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