Diego, Angeline M.  <br/><br/>
Biodiversity of molluscan species as affected by various pollutants in Ilocos Norte  
Angeline M. Diego  
 -  2006 
 - xv, 87 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 41-42