HAMMER, M. J. (1991). Water And Wastewater Technology Mark J. Hammer. Prentice - Hall.
Lua i Stíl Chicago (17ú heag.)HAMMER, Mark J. Water And Wastewater Technology Mark J. Hammer. Prentice - Hall, 1991.
Lua MLA (8ú heag.)HAMMER, Mark J. Water And Wastewater Technology Mark J. Hammer. Prentice - Hall, 1991.
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