The emission spectra of the night sky and aurora 
The Royal Society of London                                  
 - London  The Physical Society  1948 
 - 139p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>551.594  / GAS