00504nam a2200145Ia 4500003000900000008004100009040001600050080002100066100001700087245010400104260006200208300002300270650004100293650002400334IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a082.2:524.5bTHE  aDickey, J. M 4aThe phases of the interstellar mediumcJ. M. Dickey                                                  aWest VirginiabNational Radio Astronomy Observatoryc1981  a[various pagings.]  aAstronomy and astrophysics thesaurus  aInterstellar matter