Pahlman, John E. <br/><br/>
Use of lignochemicals and humic acids to remove heavy metals from process waste streams 

 - Pittsburgh, PA :  U.S. Dept. of the Interior, Bureau of Mines,  1988 
 - 9 p. :  il 
 - Report of investigations / United States of the Interior, Bureau of Mines  ; 9200 .
<br/><br/>p. 9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGUAS SERVIDAS--PURIFICACION<br/>AGUAS SERVIDAS--PURIFICACION--FILTRACION<br/>INDUSTRIA MINERA--DESECHOS INDUSTRIALES--ASPECTOS AMBIENTALES
<br/><br/><label>Dewey Class. No.: </label>622.7  / P141