Gregorio, Geronimo L. <br/><br/>
Research methods and technical writing in agriculture / 
Geronimo L. Gregorio. 
 - Manila :  Rex Book Store Incorporated,  c2000. 
 - 212 pages ;  22 cm. 
<br/><br/> doris.  References: p. 211-212. 
<br/><br/><label>ISBN: </label>9712328503