000 00544naa a2200193 4500
001 51153
090 _a51153
100 _a20011108d20009999k y0pory5003 ba
101 0 _aeng
102 _aUS
200 1 _aVariation of employee benefit costs by age
_fAnna Rappaport
461 1 _vVol. 63, nÂș 4 (2000), p. 47-56
_tSocial security bulletin|. - Washington. - ISSN 0037-7910
_030533
606 1 _aCustos
606 1 _aSeguros
606 1 _aTrabalhadores idosos
606 1 _aBibliografias
606 1 _aEstados Unidos
700 1 _aRappaport
_bAnna