Ketchum, S. <br/><br/>
Design of walls ,bins and grain elevators 

 - London  Mcgraw-Hill  1919 
 - xix,556p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>grain Elevators
<br/><br/><label>Dewey Class. No.: </label>624.1  / K52D