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Life in the universe :

Additional authors: Billingham, John, -- 1930-

Series: NASA conference publication ; . 2156 Published by : National Aeronautics and Space Administration, Scientific and Technical Information Branch : | For sale by the Superintendent of Documents, U.S. Government Printing Office, (Washington, D.C. :) Physical details: xv, 451 p. : ill. ; 25 cm.

Subject(s): Life on other planets -- Congresses. | Extraterrestrial life -- Congresses.