Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Allison, J. R. 1978. Eastern Region (R-9) and Northeastern Area. Pages 57-72 in P. W. Orr and H. D. Brown, Forest insect and disease conditions in the United States, 1977. United States Department of Agriculture, Forest Service. 88 p.