Hognestad, Eivind. <br/><br/>
Trends in consumer demands for new grades of reinforcing st-eel / by Eivind Hognestad. 

 - Skokie, Illinois : atories, Development Department 
 - [14] p. 
 - Bulletin D130 / Portland Cement Association, Research and D-evelopment Laboratories, Development Department .
<br/><br/> "Authorized reprint from Proceedings Fall Business Meeting,-pp. 22-32 (october 1967) Concrete Reinforcing Steel Institu-te".