Vol. 51, N° 90: Enero - Abril (2003) http://bdigital2.ula.ve:8080/xmlui/654321/15779 Thu, 22 Oct 2026 08:33:59 GMT 2026-10-22T08:33:59Z Vol. 51, N° 90: Enero - Abril (2003) http://localhost:8080/xmlui/bitstream/id/c265a4a7-0946-4f1b-a940-ff35ded90470/ http://bdigital2.ula.ve:8080/xmlui/654321/15779