Ella Marcus. Ion Rusu <br/><br/>
Bucharest  Catalogues of  Southern Reference Stars  Declination  zone  -10 o to +5 o, Bright Stars Declination Zone  -11 o to +6 o Equinox 1950.0 
Ella Marcus. Ion Rusu 
 - Bucharest   Bucharest Astronomical Observatory  1979 
 - 203 p.tab. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrophysics--Stars--Catalogue
<br/><br/><label>Dewey Class. No.: </label>B6o6M15f1231