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Institution
Collection
Format
Subject
2
Allegheny National Wild and Scenic River (Pa.)
2
Water resources development Government policy
2
Wildlife conservation
2
Wooden bridges
1
Acorns Diseases and pests
1
Acorns Planting
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1
Allegheny River (Pa. and N.Y.)
1
Defoliation
1
Hardwoods Grading
1
Lymantria dispar Environmental aspects
1
Millipedes
1
Oak Grading
1
Quercus rubra Diseases and pests
1
Quercus rubra Seedlings Protection
1
Trees Seedlings Protection
1
Watershed management
1
Wild and scenic rivers
1
Wooden bridges Evaluation
1
Wooden bridges Maintenance and repair
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Author
6
Northeastern Forest Experiment Station (Radnor, Pa.)
3
Forest Products Laboratory (U.S.)
3
United States. Forest Service
2
Allegheny National Forest (Agency : U.S.)
2
Galford, Jimmy R.
2
Porter, Gregory J., 1949-
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2
Ritter, Michael A.
2
Walters, Russell S.
1
Auchmoody, L. R.
1
Brisbin, Robert L.
1
Dale, Martin E.
1
Gansner, David A.
1
Hilbrich Lee, Paula D.
1
Kainz, James A.
1
National Wood in Transportation Information Center (U.S.)
1
Pennsylvania
1
Smith, H. Clay
1
United States. Department of Agriculture. Northern Advisory Council
1
United States. Department of Agriculture. Southern Advisory Council
1
United States. Federal Highway Administration
1
Wacker, James P.
1
Weiss-Cottrill, Deloris
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