@book{7724,
	author = {Billones, Rey F.,},
	title = {Potability of pumpwell waters in three selected zones in barangay San Isidro Inapatan, Nabua, Camarines Sur/ },
	publisher = {Camarines Sur Polytechnic Colleges ;},
	year = {2010.},
	address = {Nabua, Camarines Sur :}
}