00474nam a2200157Ia 4500008004100000020001500041082001800056100002400074245004600098260005300144300000800197650004100205650003400246653001000280700002600290170901s1997    xx            000 0 und d  a0412075512  a631.521bM50S  aMcDonald, Miller B. 0aSeed ProductionbPrinciples and Practices  aNew YorkbInternational Thomson Publishingc1997  a749  aAgriculture and related technologies  aTechnology (Applied sciences)  aSeeds  aCopeland, Lawrence O.