Biodiveristy indicators in agricultural systems:   a guide to sustainable farming 

 - [Colombo]:  The institute of Biology,  2013 
 - 50 pages. 
<br/><br/><label>ISBN: </label>9789558476031 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biological resources<br/>Biodiverisity-agriculturalo systems
<br/><br/><label>Dewey Class. No.: </label>333.95  / BIO