Shepard P Ed. <br/><br/>
Environ/mental 
Shepard P Ed.; Mckinley D Ed. 
 - New York       Houghton          1971 
 - x,308p.  cm. 
<br/><br/><label>Standard No.: </label>45648 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>G:55, L1