2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43055A short review of the status of supersymmetric grand unified theories and their relation to the issue of fermion masses and mixings is given.16 pages, Talk given at Euresco Conference on What Comes Beyond the Standard Model? Symmetries Beyond the Standard Model, Portoroz, Slovenia, 12-17 Jul 2003. New reference addedHigh Energy Physics - Phenomenologytext