Las Súper Ratas de Bart

Jonas y Gregoire son dos amigos de 15 anos. Jonas ve en Suzanne, hermana de Gregoire, el modelo de una juventud revolucionaria y comprometida que a el le atrae mucho. Gregoire ve en la misteriosa Srta. X a su chica ideal. En ambos casos, estos amigos muy pronto aprenderan la decepcionante naturalezade los idolos y el verdadero valor de la amistad. Y cambiaran sus vidas para siempre...

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

"In this heartwarming book, brother and sister, Mark and Sara, discover the story behind the poinsettia plant--the Christmas flower (las flores de la Nochebuena)--as their family experiences the best Christmas ever."--Cover back.

The turbulent atmosphere of suburban Barcelona hides the social isolation of a juvenile misfit. A young man fascinated by private detectives becomes entangled in a strange and dangerous case of academic dishonesty.