León Pérez MA, Báez Rojas JJ, Corona-Galindo MG. Analysis of the validity of the test Planea EMS 2017, mathematical area. recacym [Internet]. 2017 Dec. 25 [cited 2026 Nov. 10];9(1):42-51. Available from: https://recacym.org/index.php/recacym/article/view/16