Heinlein, Robert A.   1907-1988 <br/><br/>
Tunnel in the sky/ 
Robert A. Heinlein. 
 - New York:  Del Rey,  1989. 
 - 214 p.;  18 cm. 
<br/><br/><label>ISBN: </label>0345353730 
<br/><br/><label>Subjects--Topical Terms: </label>--Fiction.
<br/><br/><label>LC Class. No.: </label>PS3515.H45