Maki, T. E., D. W. Hazel, and J. R. Hall. 1981. Piedmont-North Carolina. Pages 74-81 in J. E. Coster and J. L. Searcy (eds.), Site, stand and host characteristics of southern pine beetle infestations. United States Department of Agriculture, Combined Forest Pest Research and Development Program, Technical Bulletin 1612. 115 p.