MAP20100085455 Den Barker, E.K. Social security in a European perspective / E. K. Den Barker, G.W. De Wit En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 15/04/1983 Tomo 8 Número 28 - 1983 I. Wit, G.W. de .
