Reviewer for the civil service examination: professional and sub-professional levels 
Cecilio D. Duka. 
 - 3rd edition. 
 -  Manila Review Institute, Inc.,  2016 
 - x, 253 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-71859019-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil service -- Examinations, question, etc.
<br/><br/><label>Dewey Class. No.: </label>F 351.3 D8771 2016