Leatherberry, Earl C.
St. Paul, Minn. (1992 Folwell Avenue, St. Paul 55108) : North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1990.
1990
Ostrom, Arnold J.
St. Paul, Minn. (1992 Folwell Ave., St. Paul 55108) : U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station, [1991]
1991
Miles, Patrick D.
St. Paul, Minn. (1992 Folwell Ave., St. Paul 55108) : North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1990.
1990