Walker,Arthur L. <br/><br/>
How to Use Adding and Calculating Machines 

 - 4th Ed.; 
 - Toronto:   McGraw Hill Book,  1979. 
 - 218p.;  28cm 
<br/><br/><label>ISBN: </label>0070678251 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculate
<br/><br/><label>Dewey Class. No.: </label>651.82  / WAL