Simak, Clifford D <br/><br/>
Why Call Them Back from Heaven? / 
[by] Clifford D. Simak. 
 - New York :  Avon Books,  1980. 
 - 191 p ;  18 cm. 
<br/><br/><label>ISBN: </label>0-380-50575-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science fiction.