1. University of Arkansas at Monticello,College of Forestry, Agriculture and Natural Resources,Monticello,AR,USA
2. University of Arkansas Agricultural Experiment Station, Arkansas Forest Resources Center, University of Arkansas at Monticello,College of Forestry, Agriculture and Natural Resources,Monticello,AR,USA
3. Kingwood Forestry Services, Inc,Monticello,AR,USA
4. Forestry Division,Arkansas Department of Agriculture,Little Rock,AR,USA