symposium held at Frankfurt , Germany <br/><br/>
Disposal of process wastes  liquids, solids, gases - symp. 
tr. by Max Wulfinghoff, P.E. 
 - New York  Chemical  1968 
 - vii, 240p. 
<br/><br/><label>Dewey Class. No.: </label>628.3  / N68