Marshall, W. T. <br/><br/>
Control of horizontal cracking in the ends of pretensioned -prestressed concrete girders / by W. t. Marshal and Alan H.- Mattock. 

 - Skokie, Illinois : atories, Development Department 
 - [26] p. 
<br/><br/> "Authorized reprint from copyrighted Journal of Prestressed- Concrete Institute, Vol. 7, No. 5, 56-74 (october, 1962)."