Clapham, W. B., jr. <br/><br/>
A common framework for integrating the economic and ecologic dimensions of human ecosystems  / 

 - Luxemburg:  International Institute for Applied System Analysis,  v.d. 
 - 
 - IIASA, Austria Research memorandum 78-29, 78-30 .
<br/><br/><label>Dewey Class. No.: </label>658.4032  / C588.CF