Akpan, E.R. <br/><br/>
Heavy metal trends in the Calabar River, Nigeria 

 - Berlin  Springer-Verlag   mayo 2002 
 - pp. 47-51  ilus., tbl. 
<br/><br/><label>ISSN: </label>0943-0105 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONTAMINACION<br/>METALES PESADOS<br/>SEDIMENTOS
<br/><br/><label>Subjects--Geographic Terms: </label><br/>NIGERIA