000 00307nam a2200109 4500
245 _aMain group elements : hydrogen and groups IV
_cedited by M.F.Lappert
710 _aLappert ,M.F.
260 _aLondon
_bButterworths
_c1972
300 _av.; 22cm.-
490 _aInorganic chemistry series
082 _a546
_bINO
999 _c19504
_d19504