00496nam a2200157Ia 4500003000900000008004100009040001600050080002100066245008600087260004800173300001400221650004100235650002000276650002300296700001900319IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a082.2:52bIAU-S7 0aSecond conference on co-ordination of galactic researchcedited by Adriaan Blaauw  aCambridgebCambridge University Pressc1959  avii, 93p.  aAstronomy and Astrophysics Thesaurus  aGalactic nuclei  aGalactic structure  aBlaauw, A., ed