00362nam a2200121Ia 4500008004100000082002800041100001600069245008200085250000900167260002800176650001700204700001900221220204s9999    xx            000 0 und d  a632.51:631.348.4bFRY.2  aFRYER,  J D 0aWeed control handbook. V 2. Recommendations including plant growth regulators  aEd.7  aOxfordbBlackwellc1972  aWeed control  aMAKEPEACE, R J