Greenberg Arnold E & Clesceri Lenore S  Eds <br/><br/>
Standard Methods for the Examination  of Water & Wastewater .-Edn 18 

 - Edn 18 
 -  Am Pub Health Asso, Washington 
 - pp 10-137,index,44;   28*21 
<br/><br/><label>Dewey Class. No.: </label>G91:(D8655)/N92/B19336