Porter, J. E <br/><br/>
Catalogue of cometary orbits 
J. E. Porter 
 - Hounslow West  British Astronomical Association  1961 
 - Memoirs of the british Astronomical Association .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comets-Orbits
<br/><br/><label>Universal Decimal Class. No.: </label>083.8:52  / POR