Algebra and trigonometry 
Sobel, Max A. 
 - Fifth edition. 
 -  Simon & Schuster (Asia) Pte Ltd,  1998 
 - 1 v. (various pagings) 
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<br/><br/><label>ISBN: </label>9-81402460-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.
<br/><br/><label>Dewey Class. No.: </label>512 So1a 1998