A research primer/ 
Sevilla, Consuelo G. 
 -  Rex Book Store,  1990 
 - viii, 96 p. ;. 
<br/><br/>
<br/><br/><label>ISBN: </label>9-71230799-9 
<br/><br/><label>Dewey Class. No.: </label>F 001.4 Se8r 1990