Commission on sustainable development. 

 - New  York United Nations.       1993 
 - v; 55p.  cm. 
<br/><br/><label>Standard No.: </label>172749 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"V1N45,93:3.N93r, N3/UN"