Muñoz López, Arcenio Antonio and Rodríguez Ortiz, Tatiana Junieth (2020) The influence of audio visual materials in the development of the listening skills of students of 10th grade “E”, morning shift at Eliseo Picado National Institute (INEP), in Matagalpa, during the second semester 2019. Otra thesis, Universidad Nacional Autónoma de Nicaragua,Managua.