The Illustrated Science and Invention Encyclopedia <br/><br/>
Vol.19 (Typewriter, Single Element Weighing Machines) 

 - New York  H.S Stuttman Co.INC  1977 
 - (4)2509to2648 
<br/><br/><br/>English 
<br/><br/><label>Dewey Class. No.: </label>R503  / I,S.I.E