Commercial fertilizers and soil management 

 - Berlin  Bergbau-Handel 
 - 69p.  21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers,soil conditioners,growth regulators<br/>Agriculture and related technologies<br/>Specific techniques
<br/><br/><label>Dewey Class. No.: </label>631.8  / COM