00305cam a2200109   450008200160000010000170001624500450003326000470007830000230012565000210014865000260016900a546.224 WEL1 aWells, A. F.10aModels in structural inorganic chemistry  aNew York,bOxford University Press,c1970.  axi, 186 p.billus. 0aChemical models. 0aChemistry, Inorganic.