El camión rodó cuesta debajo porque el conductor no puso una cuña bajo las ruedas.The truck rolled downhill because the driver didn't place a wedge under the wheels. The article illustrates book supports developed at the Bodleian Library using units of wedge-shaped foam cut to standard sizes. Cuñas con https://sethlbmxg.thezenweb.com/indicadores-sobre-mejores-cunas-que-debe-saber-67202304