edited by Larry H. McCormick and Kurt W. Gottschalk ; sponsored by School of Forest Resources, Pennsylvania State University, Northeastern Forest Experiment Station, USDA Forest Service, Bureau of Forestry, Pennsylvania Department of Environmental Resources, in cooperation with the Office of Conferences and short Courses, College of Agriculture, Pennsylvania State UniversityNortheastern Forest Experiment Station1991
全国の図書館
- 件名... -- Congresses Hardwoods -- United States -- Congresses
- 件名(識別子)... -- Congresses Hardwoods -- United States -- Congresses