P.E. Wareing 
Potential crop production : A case study 
 - London  Heinmann Educational Books  1971 
 - 387p 
P.E. Wareing & J.P. Cooper: Potential crop production : A case study.  London.  Heinmann Educational Books, 1971. 043562905--(633WAR)   
ENGLISH 
43562905 
633  / WAR