Webb, Stephen <br/><br/>
If the universe is teeming with aliens...where is everybody?:   Seventy-five solutions to the Fermi paradox and the problem of extraterrestrial life 

 - 2nd ed. 
 - London:   Springer,   2015 
 - 434p. 
<br/><br/><label>ISBN: </label>978-3-319-13236-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>523.4   / Q5