Hobbs, L. M.
[Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : For sale by the National Technical Information Service, 1990?]
1990
Workshop on Analysis of Returned Comet Nucleus Samples (1989 : Milpitas, Calif.)
Houston, TX : Lunar and Planetary Institute ; [Springfield, Va. : National Technical Information Service, distributor, 1989]
1989