Blackadder, William. <br/><br/>
"A direct method for the construction of influence lines for continuous girders" / 
by William Blackadder. 
 - London :  The Institution,  1931. 
 - 25 p., [1] fold. plate ;  22 cm. 
 - Institution of Civil Engineers (Great Britain).  Selected engineering papers ;  no. 119. .
<br/><br/> TA1.I68 no. 119 bound with no. 104-135 subsequent to publication. 
<br/><br/>"References": p. 25. 
<br/><br/><label>LCCN: </label>es 33000018  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Girders.
<br/><br/><label>LC Class. No.: </label>TG355  / .B6