2024-03-28T17:04:16Zhttp://dspace.ups.edu.ec/oai/requestoai:dspace.ups.edu.ec:123456789/87002015-04-15T22:12:31Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86962015-04-15T22:05:02Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86952015-04-15T22:01:05Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86942015-04-15T21:58:14Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86972015-04-15T22:06:52Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86992015-04-15T22:10:24Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/86982015-04-15T22:08:36Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446oai:dspace.ups.edu.ec:123456789/59962014-02-20T18:39:26Zcom_123456789_5415com_123456789_5394com_123456789_5388col_123456789_5446