Agenda 21 Rio declaration forest principles / 
United Nations. 
 - United Nations :  [U.S. Coordination Center for the U.N. Conference on Environment and Development,]  1992. 
 - 279 p. (pages in various numberings). 
<br/><br/><label>Subjects--Meeting Names: </label><br/>United Nations Conference on Environment and Development Rio de Janiero, Brazil).  (1992 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature and nurture.<br/>Natural resources.<br/>Ecology.