Author
Burk, Thomas E.
1
Carmean, Willard H
1
Ek, Alan R.
1
Hahn, Jerold T
1
Hansen, E. A.
1
IUFRO Conference Minneapolis, Minn.)
1
International Union of Forestry Research Organizations (IUFRO)
1
Jacobs, Rodney D
1
Johnston, William F.
2
Lake States Forest Tree Improvement Conference Chalk River, Ont.,)
1
Lake States Forest Tree Improvement Conference St. Paul, MN)
1
Lake States Forest Tree Improvement Conference, University of Minnesota)
1
North Central Forest Experiment Station
2
North Central Forest Experiment Station (Saint Paul, Minn.)
4
Shifley, Stephen R.
1
Tubbs, Carl H.
1
United States Department of Agriculture. Forest Service
1
United States. Dept. of Agriculture. Forest Service. North Central Forest Experiment Station
1
United States. Forest Service
3
University of Minnesota. College of Forestry
1