Lowry, David W. <br/><br/>
Pre-Algebra/ 
by David W. Lowry, Earl G. Ockenga and Walter E. Rucker 
 - Massachusetts  D.C Heath and Company  1990 
 - xi, 532p.  ill. tabs. fig. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>0669202037 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>513