Effective guide to libraries & reference sources / 
Evelyn Natividad [et.al] ... 
 - Manila :  National Bookstore,  1987. 
 - 245 pages :  illustration ;  22 centimeter. 
<br/><br/>Bibliography: pages 244-245 
<br/><br/><label>ISBN: </label>9710839837 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Libraries.<br/>Reference books.
<br/><br/><label>Dewey Class. No.: </label>FIL 027 Ef36 1987