Ostro, S J <br/><br/>
Radar Image of Asteroid 1989 PB.  [electronic resource] 

 -  Science (New York, N.Y.)  Jun 1990 
 - 1523-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.248.4962.1523  doi