Hammer, M. J., & Hammer, J. (2004). Water and wastewater technology. Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Hammer, Mark J., agus JR Hammer. Water and Wastewater Technology. Pearson Prentice Hall, 2004.
Lua MLA (8ú heag.)Hammer, Mark J., agus JR Hammer. Water and Wastewater Technology. Pearson Prentice Hall, 2004.
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