Benitez, Gherold C. <br/><br/>
ERGO (a journey with logic)/ 
Gherold C. Benitez and Aloysius T. Madriaga 
 - Bulacan:  St. Andrew Publishing House,  c2012. 
 - ii, 245 pages :  illustrations ;  21 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>978-971-014-161-6 (pkb.)