Roa, Elnor C. <br/><br/>
Quantitative determination of priority heavy metal pollutants in sediments and selected fish species in Agusan river and tributary:   a method development, validation, and application study 
Elnor C. Roa 
 - Iligan City  MSU-Iligan Institute of Technology  2011 
 - xxxiv, 247p. 
<br/><br/>Doctor of Philosophy 
<br/><br/><label>LC Class. No.: </label>T-00995