De Walle, F B Sevenster, J <br/><br/>
Agriculture and the environment  Minerals, manure and measures 

 - Dordrecht  Kluwer Academic Publishers  1998 
 - xii, 211 p.; 25cm. 
<br/><br/><label>ISBN: </label>792347943 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture Environmental Aspects<br/>Ecology