00287nam a2200109Ia 4500008004100000082002000041245004200061260002800103505001500131700001600146700001500162220204s9999    xx            000 0 und d  a632.9(035)bFRY 0aWeed control handbook. 2 V in 3 parts  aOxfordbBlackwellc1968  aV 2 ..Ed 5  aEvans,  S A  aFryer, J D