Sacatrapos, Shiela May  <br/><br/>
Population Density and Relative Abundance of "ONNOK" (Tellina sp.) in the Estuarine Area at Masintoc River, Paoay, Ilocos Norte 
Shiela May Sacatrapos  
 -  2012  
 - xii, 45 leaves   28 cm.  
<br/><br/> Thesis (BS Biology) -- Mariano Marcos State University-College of Arts and Sciences, Batac City  
<br/><br/>Bibliography: leaf 27