Nutrient disequilibria in agroecosystems : concepts and case studies 
edited by E.M.A. Smaling, O. Oenema, and L.O. Fresco 
 - Wallingford, UK ; Cambridge, MA  CABI Pub  1999 
 - xiv, 322 p. : ill. ; 24 cm 
<br/><br/> Includes bibliographical references 
<br/><br/><label>ISBN: </label>851992684 
<br/><br/><label>ISSN: </label>99014039 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology<br/>Plant nutrients
<br/><br/><label>Dewey Class. No.: </label>577.55