Ballard, P.B. <br/><br/>
The ABC of algebra 

 - London  University of London  1938 
 - 128 p. 
<br/><br/><label>ISBN: </label>246850 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra
<br/><br/><label>Dewey Class. No.: </label>512  / BAL