The Environmental crisis :  mans struggle to live with himself / 
Edited by Harold W. Helfrich, Jr. 
 - New Haven :  Yale University Press,  1970. 
 - x. 187 p. 
<br/><br/> "Based on the lecture series organized by the Yale School of Forestry with funds from the Ford Foundation". 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution.<br/>Natural resources.<br/>Nature--Effect of human beings on.