Walker, Arthur L. <br/><br/>
How to use adding and calculating machines 

 - 2nd ed. 
 - New York  Gregg Publishing Division/McGraw-Hill Book Company, Inc.  1960 
 - v, 250 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculating-machines
<br/><br/><label>Dewey Class. No.: </label>651.264  / W2H6