Lockhart, J. A. R. <br/><br/>
Introduction to crop husbandry :  including grassland / 
by J.A.R. Lockhart and A.J.L. Wiseman. 
 - 6th ed. 
 - Oxford, England :  Pergamon,  c1988. 
 - xiii, 319 p. :  ill. 
<br/><br/><label>ISBN: </label>0080342019  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crops.<br/>Agriculture.<br/>Crops--Great Britain.<br/>Agriculture--Great Britain.