Unknown Author
J. Wilcox
A. D. Cushman
Mary F. Benson
United States. Science and Education Administration
Regional Research Project S-59. Economic Thresholds and Sampling Subcommittee.
E. A. Harrell
W. W. McMillian
United States. Agricultural Research Service. Northeastern Region
United States. Entomology Research Division
J. R. Raulston
W. Deryck Perkins