Griffiths, John D. <br/><br/>
Single span rigid frames in steel / 
by John D. Griffiths. 
 - New York, N.Y. :  American Institute of Steel Construction,  c1948. 
 - 29 p. :  ill. 
<br/><br/> Reprinted July, 1960. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Structural frames.<br/>Steel-works.<br/>Steel.