Autores del Libro: 3456u
Resumen del Libro: 386y4k
In races, we want to know who comes in first and how long it took him or her to finish. Before we used manual stopwatches, but today we use digital timers. There are many rules in races to make sure the times are accurate. People try to break world records in races, and the times are only fractions of a second apart. 2n571o
Formatos Disponibles: PDF / EPUB
Opciones de descarga: 563z3r
Si deseas obtener una copia del libro puedes usar alguna de las siguientes opciones de descarga: