Pablo, Zenaida J.  <br/><br/>
Coliform assessment of underground water collected from residential areas near a government hospital in Ilocos Norte  
Zenaida J. Pablo 
 -  2006 
 - xv, 50 leaves   28 cm. 
<br/><br/> Thesis (BS Biology) -- Mariano Marcos State University-College of Arts & Sciences, Batac City  
<br/><br/>Bibliography: leaf 24