Elementary algebra 
Johnson, Richard E., 1913- 
 -  Benjamin/Cummings Pub. Co.,  1981 
 - xii, 496 p. 
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<br/><br/><label>ISBN: </label>0-8053-5052-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.
<br/><br/><label>Dewey Class. No.: </label>512.9 J62e 1981