Title:Model of optimization of mining complex for the planning of flow of quarry production of limestone in multiple products and with elements for the analysis of the capacity
Title:Techniques to develop the speaking skill in english learning / Design of a guide to develop the speaking skill for the eighth basic grade at Mercedes Moreno Irigoyen Public School
Title:Influence of motivational estrategies for the development of the listening comprehension / Design of a booklet with useful motivational strategies in order to develop the listening skill