Research and technical writing/ 
Reynaldo R. Portillo [and seven others] 
 - Bulacan:  Trinitas,  2003. 
 - 259 pages:  illustrations;  25 cm. 
<br/><br/> Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9714203937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technical writing
<br/><br/><label>LC Class. No.: </label>Fil T 11 .R432 2003