Environmental Indicators for Agriculture 

 - Paris :  OECD  1997 
 - 62  I 
<br/><br/><label>Subjects--Topical Terms: </label><br/>UMWELT(21)<br/>Umwelt in der Landwirtschaft und Forstwirtschaft(21x45)
<br/><br/><label>Dewey Class. No.: </label>30.457