Sobel, Max A. <br/><br/>
Algebra and trigonometry / 
Max A. Sobel. 
 - 4th ed. 
 - Englewood cliffs :  Prentice hall,  1991. 
 - 796 p. 
<br/><br/><label>ISBN: </label>0130258830 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra.<br/>Trigonometry.
<br/><br/><label>LC Class. No.: </label>QA154.2  / .S63