Co-Ordination of Galactic Research 

 - Cambridge:  The University Press  1959 
 - 92p. ; 25 cm. 
<br/><br/> Proceedings of the 7th. Symposium of the International Astronomical Union held in Saltjöbaden, Sweden, on June 1957 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomía