Building requirements for reinforced concrete (ACI 318-51) -/ reported by ACI Committee 318 

 - Detroit, Mich. : American Concrete Institute 
 - [64] p. 
<br/><br/> "Adopted as standard of the American Concrete Institute at -its 47th Annual Convention, Feb.20, 1951 as reported by Com-mittee 318 ; ratified by letter ballot apr.5, 1951".