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Item Deforestation Image
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Collage of maps showing the spread of spruce budworm in eastern Canada, 1967-1981
Collage of maps showing the spread of spruce budworm in eastern Canada, 1967-1981
Transparency map showing areas of spruce budworm infestation in eastern Canada, 1981
Transparency map showing areas of spruce budworm infestation in eastern Canada, 1981