de Groot, Rudolf S. <br/><br/>
Functions and values of protected areas:   a comprehensive framework for assessing the benefits of protected areas to human society / 
Rudolf S. de Groot. 
 -  1994. 
 - 159-169 p. 
<br/><br/><br/>Inglés 
<br/><br/><label>Dewey Class. No.: </label>333.783