1. Ballistic Missile Defense Organization, Washington, DC 22314
2. Lawrence Livermore National Laboratory, Livermore, CA 94550
3. Naval Research Laboratory, Washington, DC 20375
4. U.S. Geological Survey, Flagstaff, AZ 86001
5. Lunar and Planetary Institute, Houston, TX 77058
6. Jet Propulsion Laboratory, Pasadena, CA 91109
7. LASP, University of Colorado, Boulder, CO 80309
8. Centre National d'Etudes Spatiales, Paris, France
9. Research Support Instruments, Alexandria, VA 22314
10. Rand Corporation, Santa Monica, CA 90407
11. University of Hawaii at Manoa, Honolulu, HI 96822
12. Applied Coherent Technology, Herndon, VA 22070
13. Pacific Advanced Technology, Solvang, CA 94550
14. Brown University, Providence, RI 02912
15. Science Inquiries, Catonsville, MD 21228
16. Goddard Space Flight Center, Greenbelt, MD 20771
17. Allied Signal, Alexandria, VA 22314
18. Science Applications International, Washington, DC 20024
19. Johns Hopkins University, Baltimore, MD 21218