Philippine caves beneath the earth's surface :   conservation and management /  
Biodiversity Management Bureau. 
 - Quezon City, Philippines :  Department of Environment and Natural Resources-Biodiversity Management Bureau,  [2017]. 
 - xxiii, 269 pages :  color illustrations ;  28 cm. 
<br/><br/><br/>English. 
<br/><br/><label>ISBN: </label>9786219501675 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caves--Philippines.
<br/><br/><label>LC Class. No.: </label>GB 601  / B56 2017