Affiliation: | 1.Research Foresters, USDA Forest Service, Northern Research Station, 202 Natural Resources Building, Columbia, MO, 65211, USA ;2.Research Forester, Southern Research Station, USDA Forest Service, Stoneville, MS, 38776, USA ;3.Research Forester, Southern Research Station, USDA Forest Service, Normal, AL, 35762, USA ;4.Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN, 47907, USA ; |