00268nam a2200133Ia 4500020000900000082000800009100002400017245003500041250000600076260002300082300000900105500000600114650001400120  aNULL  a546  aWells, Alexander F. 0aStructural Inorganic Chemistry  a-  aLondonbClarenden.  a1055  a0  aChemistry