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200 10$a100 an?os de seguridad social en Espan?a$b[recurso electronico] $e(1900 - 2000) /$fConstantino Bretin Herrero
210   $aMadrid $cDykinson$dD.L.2009
215   $a1 online resource (260 p.) 
300   $aBibliographic Level Mode of Issuance: Monograph
311   $a84-9849-438-9 
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606   $aSeguridad social$zEspan?a$xHistoria
606   $aSocial security$xLaw and legislation$zSpain
615  4$aSeguridad social$xHistoria.
615  4$aSocial security$xLaw and legislation
676   $a346.46/02
700   $aBretin Herrero$b Constantino$01336894
712 02$ae-libro, Corp.
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