Spedding, C. R. W. <br/><br/>
An introduction to agricultural systems / 
C. R. W. Spedding. 
 - London :  Applied Science Publishers,  c1979. 
 - ix, 169 pages :  Illustrations ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliograhy: p. 162-166. 
<br/><br/><label>ISBN: </label>0853348235 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture.<br/>System analysis.