2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/11924Spectroscopy of high-redshift compact steep-spectrum (CSS) quasars shows a high incidence of Ly-alpha absorption close to the quasar redshift. Associated absorption systems like these are rare in other types of radio sources, with the notable exception of high-redshift radio galaxies (HZRGs). CSS quasars and HZRGs share many properties; the hypothesis that they are intrinsically similar objects is presented and discussed.6 pages, 2 figures, to appear in `The Most Distant Radio Galaxies', Amsterdam, Oct 1997, ReidelAstrophysicstext