The Online Books Page

Books by Roy L. Hedden:

Books in the extended shelves:

• Hedden, Roy L.: Optimal level of expenditure to control the southern pine beetle (U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1987), also by Joseph Edward De Steiguer, John M. Pye, and N.C.) Southeastern Forest Experiment Station (Asheville (page images at HathiTrust)
• Hedden, Roy L.: Rating stand susceptibility to southern pine beetle attack on national forests in the Gulf Coastal Plain (U.S. Dept. of Agriculture, Forest Service, Southern Forest Experiment Station ;, 1985), also by Peter L. Lorio and La.) Southern Forest Experiment Station (New Orleans (page images at HathiTrust)

Find more by Roy L. Hedden at your library, or elsewhere.