Basic concepts and methods in research  / 
Ardales, Venancio B. 
 - 3rd ed. 
 - s.l. :  Educational Publishing House,  2008. 
 - 181p.; 22.7cm. 
<br/><br/>includes bibliography, appendices, references, index 
<br/><br/><label>ISBN: </label>9789715132459 
<br/><br/><label>Dewey Class. No.: </label>Fil 001.4 A676 2008