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Field and laboratory investigations of the effectiveness of insecticidal sprays applied from aircraft in controlling larvae of spruce budworm Choristoneura fumiferana Clem.). 1953. Hurtig, H.; Fettes, J.J.; Randall, A.P.; Hopewell, W.W. . Suffield Report No. 176, DRB Project D4r9-68-20-03. Suffield Experimental Station, Ralston, Alberta. 145p.

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