Piņon, Manuel T.,  c1973. <br/><br/>
Fundamental Logic / 
Piņon, Manuel T. 
 - Manila, Philippines :  Rex Bookstore, Inc,  c1973. 
 - xiv ; 324 p. :  illus. ; bibliography ;  8.5 inch. 
<br/><br/><label>ISBN: </label>971-23-1335-2