Rio +20 United Nations Conference on Sustainable Development  Rio de Janeiro, Brazil, 20-22 June 2012. 

 - New York, NY  United Nations Dept. of Public Information  2012. 
 - 1 v. (unpaged)  22 cm. 
<br/><br/> Cover title.  "February 2012"--P. [4] of cover.  "The future we want." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy--International cooperation--Congresses.<br/>Forest Management--International cooperation--Congresses.<br/>Natural resources--Management--International cooperation--Congresses.<br/>Environmental law, International--Congresses.<br/>Sustainable development--Congresses.<br/>Economic development--Environmental aspects--Congresses.