SPEDDING C R W <br/><br/>
An introduction to agricultural systems 

 - USA  Elsevier applied 
 - viii;189p 
<br/><br/><label>ISBN: </label>185166 191 3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural system
<br/><br/><label>Dewey Class. No.: </label>338.13  / SPE.A