WILBY, C. (1983). Structural Concrete Materials; Mix Design; Plain Reinforced And Prestressed Concrete Design Tables. Butterworths.
Lua i Stíl Chicago (17ú heag.)WILBY, C.B. Structural Concrete Materials; Mix Design; Plain Reinforced And Prestressed Concrete Design Tables. Butterworths, 1983.
Lua MLA (8ú heag.)WILBY, C.B. Structural Concrete Materials; Mix Design; Plain Reinforced And Prestressed Concrete Design Tables. Butterworths, 1983.
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