00293nam a22001337a 4500020001500000082001600015100001400031245003600045250000600081260002500087300000900112650001400121650002400135  a0198553544  a546.224 WEL  aWells A.F  a Structural Inorganic Chemistry  a4  aLondonbOxfordc1975  a1095  aChemistry  aInorganic Chemistry