01354nam0-22003371i-450-99000205307040332120090427133940.0000205307FED01000205307(Aleph)000205307FED0100020530720030910d1962----km-y0itay50------baeng<<A >>review of the biological control attempts against insects and weeds in CanadaJ. H. McLeod, B. M. McGugan, H. C. CoppelBucksCommonwealth agricultural bureaux19622 v.25 cmCommonwealth institute of biological control technical communication21. : Biological control of pests of crops, fruit trees, ornamentals, and weeds in Canada up to 1959 / J. H. McLeod2. : Biological control of forest insects, 1910-1958 / B. M. McGugan and H. C. CoppelLotta biologica e integrata632.7Coppel,Harry CharlesMcGugan,Blair MalcolmMcLeod,J. H.Commonwealth Institute of Biological ControlITUNINARICAUNIMARCBK99000205307040332161 VII B.6/53.022511 (23/8/57)DAGENDAGENReview of the biological control attempts against insects and weeds in Canada406043UNINA