Precalculus mathematics 
Groza, Vivian Shaw. 
 -  Holt, Rinehart and Winston, Inc.  1972 
 - 610 pages. 
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<br/><br/><label>ISBN: </label>0-03-077670-8 
<br/><br/><label>Dewey Class. No.: </label>510.7 G89p 1972