Simplified approach to integral calculus / 
Renato E. Apa-ap ... [et al.]. 
 - Mandaluyong City :  National Book Store,  c2007. 
 - viii, 262 p. :  ill. ;  26 cm 
<br/><br/><label>ISBN: </label>9710867814 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus, Integral.
<br/><br/><label>LC Class. No.: </label>QA309  / .S55 2007