Topograpiya ng lumbay / 
Topacio-Aplaon, RM 
 - Quezon City :  The University of the Philippines Press,  2020. 
 - v, 287 p. ; 23cm. 
<br/><br/><label>ISBN: </label>9789715429184 
<br/><br/><label>Dewey Class. No.: </label>Fil 899.211 Ap37 2020