Pfeifer, Donald W. <br/><br/>
Sand replacement in structural lightweight concrete: sinter-ing grate aggregates / by Donald W. Pfeifer and J. A. Hanso-n. 

 - Skokie, Illinois : atories, Development Department 
 - [18] p. 
 - Bulletin D115 / Portland Cement Association, Research and D-evelopment Laboratories, Development Department .
<br/><br/> "Authorized reprint from copyrighted, Journal of the Americ-an Concrete Institute, March 1967. Proceedings Vol. 64 p. 1-21."