Observational aspects of galactic structure 
edited by A. Blaauw and L.N. Mavridis. 
 - Athens  NATO Science Committee  1965 
 - [various pagings.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Galactic nuclei<br/>Galactic structure
<br/><br/><label>Universal Decimal Class. No.: </label>524.7(082.1)  / OBS