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2. NOTES ON THE INTRODUCTION OF DIPRION PARASITES TO CANADA
3. Field studies on Sturmia sp., an important parasite of the European spruce sawfly;Briand;30th Rept. Quebec Soc. Prot. Plants,1947
4. The spruce sawfly outbreak in 1941;Balch;Pulp and Paper Mag. Canada,1942
5. The spruce sawfly outbreak in 1940;Balch;Pulp and Paper Mag. Canada,1941