Jacinto, Gay S.  <br/><br/>
Water pollution assessment of Quiaoit river in Batac, Ilocos Norte 
Gay S. Jacinto 
 -  2003 
 - xviii, 52 leaves   28 cm.  
<br/><br/> Thesis (BS Environmental Science) -- Mariano Marcos State University-College of Agriculture, Food & Sustainable Development, Batac City   
<br/><br/>Bibliography: leaves 39-40