Raymond A.T. George 
Vegetable Seed Production. Ed 3 
 - 3rd Ed 
 - Wallingford  CABI Publishing  2009 
 - 320p 
Raymond A.T. George: Vegetable Seed Production. Ed 3.  (3rd Ed)  Wallingford.  CABI Publishing, 2009. 81-84593-521-4--(631.521GEO)   
ENGLISH 
81-84593-521-4 
631.521  / GEO