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Forests and forestry With digital objects English
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Transparency map showing areas of spruce budworm infestation in eastern Canada, 1981
Transparency map showing areas of spruce budworm infestation in eastern Canada, 1981
Transparency relief map of Canada
Transparency relief map of Canada
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