Smith, Alex G Radio exploration of the planetary system Alex G. Smith and Thomas D. Carr - Princeton, N. J. D. Van Nostrand 1964 - vi, 148p. - Van Nostrand Momentum Book; no. 2 . Subjects--Topical Terms: Astronomy and astrophysics thesaurusPlanetary systemsRadio astronomy Universal Decimal Class. No.: 52-77 / SMI