Escobal, Pedro Ramón. <br/><br/>
Methods of Orbit Determination 

 - New Jork :   Wiley,   1965. 
 - p. 463 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ORBITAS<br/>DETERMINACION DE ORBITAS
<br/><br/><label>Universal Decimal Class. No.: </label>629.786.2