00520nam a22001817i 450000500170000000800410001704100080005810000140006624500580008065000200013865000270015865000240018565000230020965300200023265500150025270000180026777300530028520141212085916.0881024s1988    sp     gr     000 0 spa c  aeng1 aCROFT, S.10aA PARTICIPATORY PERSPECTIVE ON SOCIAL POLICY RESEARCH14aInvestigación14aParticipación social14aProtección social14aServicios sociales10aAcción social 4aDocumental1 aBERESFORD, P.0 tSOCIAL SERVICES RESEARCHgno. 3 (1986), p. 61-69