Asin, Ricardo C. <br/><br/>
Differential calculus / 
Ricardo C. Asin 
 - Valenzuela City, Philippines :  Tru-copy Publishing House,  c1999 
 - 135 pages :  illustrations ;  22 cm. 
<br/><br/><label>ISBN: </label>9789717730134 
<br/><br/><label>LC Class. No.: </label>QA 305 .A8 1999