The report examines the role of ground based observatories in the exploration of the solar system as contrasted to that of spacecraft experimenters.


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    Radar determination of the radius of Venus.

    Melbourne, W. G. / Muhleman, D. O. / Ohandley, D. A. | NTRS | 1968


    Mariner 5 and the radius of Venus.

    Cain, D. L. / Kliore, A. | NTRS | 1968



    Venus

    NTRS | 1970


    Venus

    Engineering Index Backfile | 1948