00299nam a2200109 a 450000500170000002000150001708200200003210000200005224500760007226000240014830000170017220251203091514.0  a0895737094  a530.41,bD, hof  aHoffmann, Roald  aSolids and surfaces: a chemist's view of bonding in extended structures  aNew YorkbVCHc1988  ax,142p, 24cm