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Published online by Cambridge University Press: 31 May 2012
An investigation of the parasites of the pest species of grasshoppers in Canada is now being carried out as a co-operative project between the Field Crop Investigations Unit of the Division of Entomology and the Parasite Laboratory of the Dominion Department of Agriculture.
* Contribution No. 2252, Division of Entomology, Science Service, Department of Agriculture, Ottawa, Canada.