00506nam a2200133   450000100060000010000410000610100080004720000990005546301130015460600460026770000250031370100210033885200130035912408  a20010326u           y0pory50      ba  aeng  aAge, cohort, and time period confounds in aging researchfChristine R. Kovach, Thomas R. Knapp  tPerspectives social gerontology/Robert B. Enright (ed. lit.).- Massachusets: Allyn and Bacon, 1994.- p.24-30  aGERIATRIA  TERCEIRA IDADE  ENVELHECIMENTO  aKOVACHbChristine R.  aKNAPPbThomas R.  jSOC.1598