Ponnamperuma, Cyril <br/><br/>
Interstellar communication :  scientific perspectives / 
Cyril Ponnamperuma and A. G. W. Cameron 
 - Boston :  Houghton Mifflin,  1974 
 - 226 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography: p. 187-226 
<br/><br/><label>ISBN: </label>0395178096 :  USD 6.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Life on other Planets<br/>Interstellar communication
<br/><br/><label>Dewey Class. No.: </label>523.13