Goodrich, D C. (Department of Agriculture Tucson, AZ, United States)
Burns, I. S. (Department of Agriculture Tucson, AZ, United States)
Unkrich, C. L. (Department of Agriculture Tucson, AZ, United States)
Semmens, D. J. (Geological Survey Denver, CO, United States)
Guertin, D. P. (Arizona Univ. Tucson, AZ, United States)
Hernandez, M. (Department of Agriculture Tucson, AZ, United States)
Yatheendradas, S. (Maryland Univ. College Park, MD, United States)
Kennedy, J. R. (Department of Agriculture Tucson, AZ, United States)
Levick, L. R.. (Department of Agriculture Tucson, AZ, United States)