Geometry Crystal Groups (2nd Ed) - Hardcoverby Andrzej Szczepanski (Author) It is eleven years since the First Edition of Geometry of Crystallographic Groups appeared. This Second Edition expands on the first, providing details of a new result of automorphism of crystallographic groups, and on Hantzsche Wendt groups manifolds. Crystalographic groups are groups which act via isometries on some n dimensional Euclidean space, so named because in three dimensions they occur as the symmetry groups