2026-04-05T06:07:48Z https://upm.alma.exlibrisgroup.com/view/oai/34UPM_INST/request Colección Digital Politécnica https://upm.alma.exlibrisgroup.com/view/oai/34UPM_INST/request 2.0 archivo.digital@upm.es 1399-12-24T00:00:00Z transient YYYY-MM-DDThh:mm:ssZ oai alma.34UPM_INST : oai:alma.34UPM_INST:12345678