For projCRSs 3167-68 and 29871-73, in CRS name and alias changed R.S.O. to RSO. For proj 19956-58, in alias changed R.S.O. to RSO. For proj 19871-72 added alias. For projCRS 3376, in remarks changed 1968 to 1948. For projCRSs 3375-76, 3167-68 and 29873 added supersession cross-references. For geogCRS 4751, deleted entry in change field.