Kaar, Paul H. <br/><br/>
High strength Bars as concrete reinforcement part 4: contro-l of cracking / by Paul H. Kaar and Alan H. Mattock. 

 - Skokie, Illinois : atories, Development Department 
 - [30] p. 
 - Bulletin D59 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .
<br/><br/> "Reprinted from the Journal of the PCA Research and Develop-ment Department Laboratories, Vol. 5 No. 1, 15-38 (January - 1963)."