Criptología digital (Digital Cryptology)

El anónimo detective de El misterio de la cripta embrujada, El laberinto de las aceitunas y La aventura del tocador de señoras regresa a la acción en tiempos de crisis. Contra su voluntad, es decir, movido por la amistad y sin un euro en el bolsillo, vuelve a ejercer de insospechado sabueso en la Barcelona de hoy en una carrera contrarreloj por desarticular una acción terrorista antes de que intervengan los servicios de seguridad del Estado.Años después de dejar el sanatorio mental donde compartieron celda, Rómulo el Guapo le propone un golpe a nuestro protagonista. Su negativa y la...

The man who saved the lives of his PT-109 crewmen during WWII and became the 35th president fought-and won-his first battle at the age of two-and-a-half, when he was stricken with scarlet fever. Although his presidency was cut short, our nation¿s youngest elected leader left an indelible mark on the American consciousness and now is profiled in our Who Was¿? series. Included are 100 black-and-white illustrations as well as a timeline that guides readers through this eventful period in history.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

The Mi Mini Biografia series are Spanish language biographies for the earliest readers. This book examines the life of Davy Crockett in a simple, age-appropriate way that will help children develop word recognition and reading skills. Includes a timeline and other informative backmatter.