La Energía Solar (Solar Energy)

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Follows the Thirteen the Amendment that freed the slaves, end of the war, and the death of President Abraham Lincoln.

Follows The Thirteenth Amendment That Freed The Slaves, The End Of The War, And The Death Of President Abraham Lincoln.

The same fascinating content as Seymour Simon's AMAZING AIRCRAFT, thoughtfully translated into Spanish for use in the classroom or at home. Newly Updated 2012.

Arde Bayres es una historia de drama y desesperación signada por el amor, el desengaño, la droga y la violencia.

Catorce relatos, instantáneas dolidas y concisas, buscan abrir atisbos hacia el fondo oscuro que comunica el mundo de la infancia con su apertura hacia el mundo adulto, entendiendo por tal el universo del dolor en la época de la guerra civil.

A compendium of fascinating facts about more than 100 different animals, this educational trivia book answers questions such as What purpose does a pelican's pouch serve? Which animals carry their young in a pouch? and Are electric eels really dangerous? Un compendio de hechos fascinantes sobre m�s de 100 animales diferentes, este libro de trivialidades contesta preguntas como �Qu� prop�sito tiene la bolsa del pelicano? �Cu�les animales llevan a sus cr�as en una bolsa abdominal? y �Son las anguilas el�ctricas peligrosas?