Elementary algebra, part 1 
Denholm, Richard A. 
 - new edition. 
 -  Houghton Mifflin Company.  1983 
 - xii, 473 pages. 
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<br/><br/><label>ISBN: </label>0-395-32890-X 
<br/><br/><label>Dewey Class. No.: </label>512.9 D41 1983