Grammar at work ( for college freshmen ) / 
Opetina, Leandro N. 
 - Intramuros, Manila :  Mindshapers Co., Inc.,  2007. 
 - ix, 264 p.; 25.2 cm. 
<br/><br/>Includes notes, appendices, bibliography 
<br/><br/><label>ISBN: </label>9789710445141 
<br/><br/><label>Dewey Class. No.: </label>Fil 415 Op61 2007