Toews, david waltner. <br/><br/>
Ecosystem sustainability and health :  A practical approach / 
By david waltner Toews. 
 - 1st Ed. 
 - London :  Cambridge University Press,  2004. 
 - 138p. ;  00 cm. 
<br/><br/><label>ISBN: </label>9780521824781 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS.
<br/><br/><label>Dewey Class. No.: </label>333.95  / WAL