000 00393 a2200145 4500
020 _a0749221704
082 _a512.2
_bOPE
090 _c8027
_d11083
100 _aHolroyd, Fred
245 _aGroups & gemoetry
_bunit GE2
_b periodic and transitive tilings
260 _aMilton Keynes
_bThe Open University
_c1994
_g1994
300 _a49p.
_c31cm
650 _aGroups and group theory
942 _cL
999 _c36703
_d36703