ENVIRONMENTAL problems  pesticides, thermal pollution, and environmental synergisms 
edited by Billy Ray Wilson 
 - Philadelphia   J. B. Lippincott Company  c1968 
 - 183p.:  ill.;  21cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0006823402 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineering--Congresses<br/>Pollution--Congresses