Montgomery, R. A. <br/><br/>
Trouble on planet earth 
/ R. A. Montgomery 
 - Toronto, Canada  : Bantam Books  , c1984. 
 - 116 p. 
 - Choose your own adventure .
<br/><br/><label>ISBN: </label>0-553-23865-5 
<br/><br/><label>Dewey Class. No.: </label>JUV FIC MON