Popovics, S. (1992). Concrete materials: Properties, specifications and testing (2nd ed.). Park Ridge, NY.: Noyes Publications.
Παραπομπή Chicago StylePopovics, Sandor. Concrete Materials: Properties, Specifications and Testing. 2nd ed. Park Ridge, NY.: Noyes Publications, 1992.
Παραπομπή MLAPopovics, Sandor. Concrete Materials: Properties, Specifications and Testing. 2nd ed. Park Ridge, NY.: Noyes Publications, 1992.
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