00305    a2200109   4500020001500000082001500015100001600030245005500046260005100101300001500152650002800167  a0749221690  a512.2bOPE  aNelson, Roy  aGroups & gemoetrybunit GE1b counting with groups  aMilton KeynesbThe Open Universityc1994g1994  a47p.c31cm  aGroups and group theory