Heinlein, Robert A.  1907-1988 <br/><br/>
A Heinlein trio / 
Robert A. Heinlein. 
 - Garden City, N.Y. :  Nelson Doubleday, Inc.,  c1957. 
 - 502 p. ;  22 cm. 
<br/><br/>The puppet masters. -- Double star. -- The door into summer. 
<br/><br/><label>ISBN: </label> $6.98 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science fiction.