Sullivan, Walter <br/><br/>
We are not alone : the search for intelligent life on other worlds 

 - New York  McGraw- Hill  1964 
 - xi, 325 p. 
<br/><br/><label>ISBN: </label>189205 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Universe
<br/><br/><label>Dewey Class. No.: </label>523.1  / SUL