How to Recognize and Reduce Tree Hazards in Recreation Sites

References
Berry, Frederick H. Reducing decay losses in high-value hardwoods - A guide for woodland owners and managers. Agric. Handb. 595. Washington, DC: U.S. Department of Agriculture, Forest Service; 1982. 23 p.
Johnson, David W. Tree hazards: recognition and reduction in recreation sites. Tech. Rep. R 2-1. Lakewood, CO: U.S. Department of Agriculture, Forest Service, Forest Pest Management; 1981. 17 p.
Mills, Lynn J.: Russell, Kenelm. Detection and correction of hazard trees in Washington's recreation areas. DNR Rep. 42. Olympia, WA: State of Washington Dept. of Natural Resources; 1981. 37 p.
Paine, Lee A. Accident hazard evaluation and control decisions on forested recreation sites. Res. Pap. PSM-68. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station; 1971. 10 P.
Shigo, Alex L. Branches. jour. Arboriculture 6:300-304; 1980.
Shigo, Alex L. How to assess the defect status of a stand. No. Jour. Appl. For. 1:41-49; 1984.
Shigo, Alex L.; Felix, Robert. Cabling and bracing. jour. Arboriculture 6:5-9; 1980
Shigo, Alex L. Larson, Edwin H. A photo guide to patterns of discoloration and decay in living nothern hardwood trees. Res. Pap. N E-1 27. Broomall, PA: U.S. Department -of Agriculture, Forest Service, Northeastern Forest Experiment Station; 1969. 100 p.
U.S. Department of Agriculture, Forest Service. A guide to common insects and diseases of forest trees in the northeastern United States. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Area State and Private Forestry, Forest Pest Management; 1979. 127 p.
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