Janney, Jack R. <br/><br/>
Nature of bond in pre-tesioned presstressed concrete / by J-ack R. Janney. 

 - Skokie, Illinois : ies, Development Department 
 - [20] p. 
 - Bulletin D2 / Portland Cement Association, Research and De-velopment Laboratories, Development Department .
<br/><br/> "Authorized reprint from copyrighted Journal of the America-n Concrete Institute May 1954, Proceedings Vol. 50, p. 717"