000 00443nab#a2200181#c#4500
003 IEF
005 20180219150918.0
008 941205s1978 uuu|| #####0 b| |u
040 _aIEF
245 _aSocial insurance
260 _c1978
650 4 _aSEGURIDAD SOCIAL
_948362
650 4 _aASPECTOS ECONOMICOS
_932202
773 0 _tJournal of public economics
_w51900
_gvol. 10, nÂș 3 dec.
942 _cART
942 _z45169
999 _c11672
_d11672