Intermediate algebra 
Mervin L. Keedy. 
 - Sixth edition. 
 -  Addison-Wesley Publishing Company.  1991 
 - xxiv, 643 pages 
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<br/><br/><label>ISBN: </label>0-201-19695-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.
<br/><br/><label>Dewey Class. No.: </label>512.9 K434i 1991