Albert Einstein

Learn the story of Spanish conquistador Juan Ponce de León and how he shaped the history of both Florida and Puerto Rico during the Age of Exploration. Conoce la historia del conquistador español Juan Ponce de León y cómo influyó en la historia de Florida y Puerto Rico durante la Era de las Exploraciones. In the early 1500s, Ponce de Leon was was one of the most important Spanish military figures in the Caribbean. He made his first voyage across the Atlantic with Christopher Columbus and then, after years of battle with the native Taino, became the first governor of Puerto Rico. Although ...

A foundered Victorian ship looking for the fabled Northwest Passage holds a secret in its icy grave... When Dirk Pitt of NUMAr is almost blown to pieces in a lab explosion, he suspects sabotage. The lab in question belongs to a scientist hoping to use a rare mineral to combat greenhouse gases - but who would want to destroy our one chance to save the planet? However, there are those who will do anything to control such a valuable prize. Pitt's investigations take him to the Arctic in search of a clue to the origins of this precious mineral. There he and NUMAr colleague Al Giordino must battle ...

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

La historia de una trágica equivocación: la política colonial de España en el protectorado de Marruecos. Un relato protagonizado por dos soldados de leva, Andreu y Amador, y el sargento Molina, en el que se describen los horrores de la guerra y el horror del hombre ante un destino impuesto por eso que llaman «razón de Estado».