Proceeding the 4 th internatipnal conference on diffuse pollution / 
International Association on Water Quality 
 - Bangkok :  International Association on Water Quality,  2000 
 - 636 p. :  map, tab, graph. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution--Research.
<br/><br/><label>Dewey Class. No.: </label>Res 363.73072  / I61P