Baird, A. K. (Pomona College Claremont, Calif., United States)
Castro, A. J. (Pomona Coll. Claremont, CA, United States)
Clark, B. C. (Martin Marietta, Planetary Sciences Laboratory, Denver Colo., United States)
Toulmin, P., III (Pomona Coll. Claremont, CA, United States)
Rose, H., Jr. (U.S. Geological Survey Reston, Va., United States)
Keil, K. (Pomona Coll. Claremont, CA, United States)
Gooding, J. L. (New Mexico, University Albuquerque, N. Mex., United States)