Acosta Santana, Iris L. <br/><br/>
Size distribution of trace metals in Ponce air particulate matter 
Iris L. Acosta Santana. 
 -  1988. 
 - xii, 136 p.  ill., graphs. 
<br/><br/>Thesis (M.S.)-Catholic University of Puerto Rico. 
<br/><br/>Includes bibliografical references : p. 66-68. 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Pontificia Universidad Católica de Puerto Rico--Dissertations.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metals<br/>Trace elements--Environmental aspects.<br/>Trace elements
<br/><br/><label>LC Class. No.: </label>HD4013