Differential Equations / 
Ymas, Sergio E. 
 - 2008/ed. 
 - 302p. :  illus. ;  25.5cm. 
<br/><br/><label>ISBN: </label>9789710438143 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential Equations--2007--Philippines--newsprint.