Cusens, A.R. and Santathadaporn, Sakda <br/><br/>
Design charts for helical stairs  : with fixed supports 

 - London  ; Concrete Publications  , 1966 
 - 35p. 
<br/><br/><label>ISBN: </label> 9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering<br/>Mechanical Engineering
<br/><br/><label>Dewey Class. No.: </label>621  / CUS