2021-06-22T16:51:47Z http://ecuciencia.utc.edu.ec/Ecuciencia/oai Cienciométrico http://ecuciencia.utc.edu.ec/Ecuciencia/oai 2.0 ecu.ciencia@utc.edu.ec 2021-06-22T16:51:47Z persistent YYYY-MM-DDThh:mm:ssZ gzip deflate oai ojs.ecucienciautc : oai:ojs.ecucienciautc:article/282 http://memory.loc.gov/ammem/oamh/lcoa1_content.html Selected collections from American Memory at the Library of Congress http://oai.east.org/foo/ http://oai.hq.org/bar/ http://oai.south.org/repo.cgi