Earthscape  exploring endangered ecosystem  [electronic resource] 
creating in cooperation with National Wildlfe Federation. 
 - New York  Mc Graw Hill  c1997. 
 - 1 CD-ROM  ill.  4 3/4 in.  1 users guide. 
<br/><br/><label>ISBN: </label>0078529514 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Endangered ecosystems<br/>Cd Rom--Mayaguez Library.<br/>Biotic communities<br/>Biological diversity<br/>Animal populations<br/>Endangered species<br/>Plant populations<br/>Natural resources