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Kettela, E. G.

A cartographic history of spruce budworm defoliation from 1967 to 1981 in eastern North America / by E.G. Kettela = Historique en cartes de la défoliation causée par la tordeuse des bourgeons de l'épinette dans l'est de l'Amérique du Nord de 1967 à 1981 / par E.G. Kettela.  Ottawa : Canadian Forestry Service = Service canadien des forêts, 1983. iv, 8 pages : illustrations, maps some copies; 28 cm.

Nova Scotia Archives Library - use request slip - V/F V.294 #18 - Vertical File

Includes abstract in French. Text in English and French in parallel columns.

Canadian Forestry Service.

Spruce budworm — Control
Trees — Diseases and pests.

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Guidelines for predicting tree mortality caused by the spruce budworm, and measures for reducing losses Hull, Quebec : Environment Canada, Canadian Forestry Service, 1982-. 1 folded sheet.

Nova Scotia Archives Library - use request slip - V/F V.292 #6 - Vertical File

               

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