Walker Arthur L <br/><br/>
How to use adding and calculating machines 
Walker Arthur L; Roach J Kenneth; Hanna J marshall 
 - New York  Gregg publishing division      1954 
 - 247  cm. 
<br/><br/><label>Standard No.: </label>11,152 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INDUSTRIAL ARTS
<br/><br/><label>Dewey Class. No.: </label>MB1, J4