Lumaguip, Joan C.  <br/><br/>
Pesticide residue analysis in selected vegetable growing areas of Batac, Ilocos Norte  
Lumaguip, Joan C.  
 -  2006  
 - xv, 31 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 23