Merbach, Wolfgang <br/><br/>
Long-Term Fertilization Trials in Halle (Saale), Germany [electronic resource]   
by Wolfgang Merbach and Annette Deubel 
 - Wiesbaden  Springer  2007 
<br/><br/> http://dx.doi.org/10.1007/978-3-8350-9648-6 
<br/><br/><label>ISBN: </label>9783835096486 
<br/><br/><label>Dewey Class. No.: </label>333.1143184  / (e-book)