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ACI Standard Specifications for Concrete Pavements and Bases (ACI 617-44) Adopted as a Standard of the American Concrete Institute at Its 40th Annual Convention, March 1, 1944, as Reported by Committee 617; Ratified by Letter Ballot July 28, 1944

American Concrete Institute

出版	American Concrete Institute, 1944
URL	http://books.google.com.hk/books?id=gQtYd3gsNOUC&hl=&source=gbs_api