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    The design, development, testing, fabrication, calibration, and integration of a high resolution imager (HRI) for the Roentgen satellite (ROSAT) by Gerdes, John W.

    Cambridge, MA : [Washington, D.C.] : [Springfield, Va.] : Smithsonian Institution, Astrophysical Observatory ; [National Aeronautics and Space Administration] ; [National Technical Information Service, distributor], 1985
    Format: Government Document Book