A digital imaging photometry system for cometary data acquisition : Center director's discretionary fund final report /

by Clifton, K. Stuart
[Marshall Space Flight Center, Ala.] : [Springfield, Va.] : National Aeronautics and Space Administration, George C. Marshall Space Flight Center ; [For sale by the National Technical Information Service], 1986

Comet Kohoutek : a workshop held at Marshall Space Flight Center, Huntsville, Alabama, June 13-14, 1974 : [papers] /

Washington : Scientific and Technical Information Office, National Aeronautics and Space Administration : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1975