Martínez Flores, Cristian Edenilson and Mancia Escobar, Marvin Alfredo and Sosa Velado, Tatiana Gabriela and Toledo Mendoza, Fidel Eduardo (2019) The importance of soft skills-cooperation,problem solving,and adptability in the development of the speaking skill of first year high school students of Bachillerato Industrial at Centro Escolar INSA. Bachelor thesis, Universidad de El Salvador.