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ISBD
Marc
091
$bBases de datos;Obras de referencia;Revistas
092
$aEX_recurso $eEX_recurso $hrecurso
100
$aThe library of Congress
245
$aThe Library of Congress. OAI at the Library
260
$bThe library of Congress $aEstados Unidos
500
$aRepositorio de acceso abierto a las publicaciones científicas con registros OAI aprovechables para colecciones históricas digitalizadas
506
$aLbre
650
$aBibliotecas y Unidades de Información
652
$aLibraries and information units
653
$aBases de datos
653
$aObras de referencia
653
$aRevistas
656
$aDatabases
656
$aReference resources
656
$aJournals
856
$u
Ver recurso on-line
950
$aRepositorios digitales
950
$aBibliotecas digitales
951
$aDigital repositories
951
$aDigital libraries
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