TY - JOUR AU - Nausa, Ricardo PY - 2007/11/01 Y2 - 2024/03/28 TI - Presentación JF - GIST – Education and Learning Research Journal JA - GIST VL - IS - 1 SE - Presentation DO - UR - https://latinjournalorg.biteca.online/index.php/gist/article/view/570 SP - 7 - 9 AB - ER -