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  • espaciodigital.upel.edu.ve/simple-search?query=&sort_by=score&order=desc&rpp=10&filter_field_1=dateIssued&filter_type_1=equals&filter_value_1=%5B2010+TO+2017%5D&filter_field_2=author&filter_type_2=equals&filter_value_2=Direcci%C3%B3n+de+Desarrollo+y+Mantenimiento+de+la+Planta+F%C3%ADsica%2C+Unidad+de+Mantenimiento+y+Servicios&etal=0&filtername=dateIssued&filterquery=2017&filtertype=equals (port 80)