Items where Author is "Valle Valle, Roberto Vladimir"
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Martínez Luna, Adiel Isaí and Ruiz Molina, Josè Enrique and Valle Valle, Roberto Vladimir (2016) Difficulties that advanced Intensive English I student of The Bachelor of arts in English with emphasis in teaching face to produce accurate and fluent oral English discourse at the Department of Foreign Languages of The University of El Salvador, year 2015. Bachelor thesis, Universidad de El Salvador.