National research council <br/><br/>
Ecological knowledge and environmental problems-solving concepts and case studies 
National research council 
 - Washington  National Academy Press         1986 
 - xi, 388p.  cm. 
<br/><br/><label>Standard No.: </label>38115 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>G:527, M6