Simon, Tony <br/><br/>
The Search For Planet X 

 - New York:  Basic Books,  1962. 
 - 118p.;  Col.ill.  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Specific celestial bodies and phenomena
<br/><br/><label>Dewey Class. No.: </label>523.4  / SIM