2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/61785We study the torsion free generalized crystallographic groups with the indecomposable holonomy group which is isomorphic to either a cyclic group of order ${p^s}$ or a direct product of two cyclic groups of order ${p}$.22 pages, AMS-TeXGroup TheoryK-Theory and HomologyRepresentation TheoryPrimary 20F14, 20D10, 20F05text