El ciclo del nitrógeno (The Nitrogen Cycle)

Reveals the truth about cannibalism in pre-Columbian America, avoiding sensationalism and opting for historical accuracy on a matter that has been subjected to all sorts of misinterpretations as well as mistaken beliefs.

Bright stars twinkle in the night sky. Have you looked up into the sky on a clear night and seen these tiny points of light? Did you know that there are many kinds of stars in space? Find out all about them in this Spanish-translated book.

El alférez Francisco Arner está al mando de una sección en Tamucha, un puesto militar cercano a Ifni. Mientras, a muchos kilómetros de allí, en el palacio de El Pardo, Franco y sus ministros "organizan" la guerra. Una noche el aférez, junto con sus soldados, es enviado por su superior de patrulla nocturna. Con tan mala fortuna que es precisamente aquélla la noche escogida por los marroquíes para iniciar las hostilidades bélicas contra los puestos militares españoles de la zona. En diciembre de 1957 estalló la guerra entre España y Marruecos. Silenciada en su momento y...

What do you do if you find yourself stranded at sea? This useful Spanish-translated nonfiction book gives readers the information they need in order to survive at sea. With essential tips and instructions, helpful diagrams and images, a bibliography, and a list of other useful websites, readers will learn everything they need in order to survive--from the dangers of hypothermia, what to do if there's only saltwater available, and other useful survival skills.