2010-07-30T12:22:44Z http://contenidos.proyectoagrega.es/oaipmh/OaiPmhRequest/OaiPmhRequest.do Agrega /oaipmh/OaiPmhRequest/OaiPmhRequest.do 2.0 agrega@red.es 2010-01-21 no YYYY-MM-DD oai agrega.es : oai:agrega.es:identificadorMec