Mcallister, D.W. <br/><br/>
How to get more out of your calculating machines 

 - London, Van nostrand reinhold Company. 
 - 134p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Calculating Machines
<br/><br/><label>Dewey Class. No.: </label>513.9  / M11H