5 1 30 Rodríguez Campos, Ismael Primary Author mixed material 9786070930720 México Porrúa c2018 METODOSY.jpeg.jpeg técnicas y aplicaciones Cázares Hernández, Laura Primary Author Christen, María Primary Author Zamudio Rodríguez, Luz Elena Primary Author Villaseñor Roca, Leticia Primary Author mixed material 9786071739667 México Trillas 2020 descarga7.jpg.jpg estructura y metodología Rivas Tovar, Luis Arturo Primary Author mixed material 9786071738813 México Trillas 2020 descarga_%2843%29.jpeg.jpeg la solucion a un problema Suárez Iñiguez, Enrique Primary Author mixed material 9786071741448 México Trillas c2021 descarga_%2842%29.jpeg.jpeg reading and writing Beamont, John Primary Author Yancey, A. Judith Primary Author Boyd, Frances Primary Author Numrich, Carol Primary Author mixed material 9780135232613 Pearson Educación c2020 descarga_%2819%29.jpg.jpg