Rigonan, Donalyn R.  <br/><br/>
Water quantity assessment of drinking water in selected urban areas in Batac, Ilocos Norte  
Donalyn R. Rigonan 
 -  2006  
 - xiv, 34 leaves   28 cm.  
<br/><br/> Thesis (BS Environmental Science) -- Mariano Marcos State University-College of Agriculture, Food and  Sustainable Development, Batac City    
<br/><br/>Bibliography: leaf 24