Smithsonian contributions to astrophysics 

 - washington, d.c. :  astrophysical observatory, smithsonian institution, 
 - Irregular 
<br/><br/><label>ISSN: </label>0081-0231 
 = Smithsonian contributions to astrophysics 
 = smithson. contrib. astrophys. 
<br/><br/><label>Subjects--Index Terms: </label>ASTRONOMIA