IUCN Commission on Ecosystem Management. 

 - Gland, Switzerland :  IUCN - The World Conservation Union,   [19- ?] 
 - 6 p. :   30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecosystem management.
<br/><br/><label>Dewey Class. No.: </label>577