Mary, model of motherhood for African Christian mothers : (specific case of Igboland - Nigeria) : excerpta ex dissertatione ad doctoratum in Sacra Theologia cum specializatione in Mariologia - Okolie, Ursulla Nwanneka (C.I.M.M.C.) 1969- (Dissertationes ad lauream in Pontificia Facultate Theologica "Marianum" (Pontificia Facultate Theologica "Marianum"), 2007)