Richter, Nikolaus B. <br/><br/>
The nature of comets 
Nikolaus B. Richter, translated by Arthur Beer                                          
 - rev ed. 
 - London  Methuen  1963 
 - xli, 221p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Comets<br/>Solar system
<br/><br/><label>Universal Decimal Class. No.: </label>523.64  / RIC