?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Driessen%2C+Ir.+Ronald+G.&rft.aulast=Driessen&rft.aufirst=Ronald+G.&rft.date=2006&rft.title=Breeding+and+Production+of+Organic+seeds%2C+The+Rijk+Zwaan+view&rft.genre=proceeding