The natural environment :  wastes and control / 
R.F. Christman ...( et.al ). 
 - Revised Edition. 
 - Pacific Palisades, California :  Goodyear Publishing,  1974. 
 - 244 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0876206119 
<br/><br/><label>LCCN: </label>74-18363 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution.<br/>Ecology.<br/>Environmental protection.<br/>Environmental policy.