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1. Using opportunity costs to assess the economic impact of spruce budworm defoliation
Using opportunity costs to assess the economic impact of spruce budworm defoliation
Andersen Stig
Lawson John M.
Dool Derek F.
Sault Ste. Marie : Canadian Forest Service , 1995. - 1 dvojlist : 3 obr., fot., 28 cm
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