Krishna, K. R <br/><br/>
Agrosphere : nutrient dynamics, ecology, and productivity 
K.R. Krishna 
 - Enfield, NH  Science Publishers  c2003 
 - x, 344 p. : ill. (some col.), col. maps ; 25 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781578082759 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology<br/>Agriculture - Environmental aspects<br/>Crops and soils<br/>Soil fertility
<br/><br/><label>Dewey Class. No.: </label>631.422 KRI