Ground water.

Manylion Llyfryddiaeth
Awduron Corfforaethol:	University of the Philippines (Quezon City). Science Education Center, University of the Philippines (Diliman). Science Education Center
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Quezon City SEC 1982.
Cyfres:	Philippine environment series. Water resources / Science Education Center, University of the Philippines [2]
Pynciau:	Water, Underground > Philippines.