Portland Cement Association (United States). <br/><br/>
Continuous concrete bridges / 
Portland Cement Association. 
 - 2nd ed. 
 - Chicago :  Portland Cement Association,  c1944. 
 - 106 p. : ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bridges, Continuous.<br/>Bridges, Concrete.