Kaar, Paul H. <br/><br/>
Precast - prestressed concrete bridges 1 pilot tests of con-tinuous girders / by Paul H. Kaar, Ladislav B. Kriz and Eiv-ind Hognestad. 

 - Skokie, Illinois. : atories 
 - 21 p. 
 - Bulletin; D-34 / Portland Cement Association. .