00536nam a2200169Ia 4500003000900000008004100009040001600050080001500066100002100081245010300102260004600205300001000251650004100261650002000302650002400322700002000346IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a524.5bMEN  aMenzel, Donald H 0aPhysical processes in gaseous nebulaebtheoy of the balmer decrementcMenzel, D. H. & Baker, J. G.  bAstronomical Society of the Pacificc1937  a610p.  aAstronomy and astrophysics thesaurus  aGaseous nebulae  aInterstellar matter  aBaker, James G.