Managing cavity trees for wildlife in the Northeast / Richard M. DeGraaf, Alex L. Shigo.
|Main Author:||DeGraaf, Richard M.|
|Related Names:||Shigo, Alex L. 1930-|
[Broomall, PA] : U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1985.
Forests and forestry
> Northeastern States.
Birds > Northeastern States > Eggs and nests.
Trees > Wounds and injuries.
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21 p. :
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