2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/61692We discuss 3-manifolds which are cyclic coverings of the 3-sphere, branched over 2-bridge knots and links. Different descriptions of these manifolds are presented: polyhedral, Heegaard diagram, Dehn surgery and coloured graph constructions. Using these descriptions, we give presentations for their fundamental groups, which are cyclic presentations in the case of 2-bridge knots. The homology groups are given for a wide class of cases. Moreover, we prove that each singly-cyclic branched covering of a 2-bridge link is the composition of a meridian-cyclic branched covering of a determined link and a cyclic branched covering of a trivial knot.46 pages, 13 figures. To appear in Atti del Seminario Matematico e Fisico dell'Universita' di Modena, special issue dedicated to the memory of Mario PezzanaGeometric Topology57M12; 57R65text