Second conference on co-ordination of galactic research 
edited by Adriaan Blaauw 
 - Cambridge  Cambridge University Press  1959 
 - vii, 93p. 
<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>082.2:52  / IAU-S7