00541nam a2200133   450000100060000010000410000610100080004720001190005546301170017460600560029170000240034770100230037185200130039412768  a20010326u           y0pory50      ba  aeng  aProductive aging and senior volunteerismeis the U. S. experience relevant?fHelen K. Kerschner, Frances F. Butler  tPerspectives social gerontology / Robert B. Enright (ed. lit.).- Massachusets: Allyn and Bacon, 1994.- p.210-216  aTRABALHO  TERCEIRA IDADE  ENVELHECIMENTO  GERIATRIA  aKERSCHNERbHelen K.  aBUTLERbFrances F.  jSOC.1598