La exploracion de California (Exploration of California)

Planck consideró como tarea científica suprema la búsqueda de las leyes que rigen el absoluto, el invariante oculto en la realidad externa. Le cupo el privilegio de descubrir uno de esos elementos universales: el quantum de acción, la constante h.

This brief atlas provides basic information and statistics on all the countries of the world. It includes more than 125 maps and color illustrations as well as the flags of each nation.

Jennyes una mujer joven sin esperanzas y motivos para seguir con su vida. Después de un fracasado intento de suicidio, su abuela Gabby, superviviente de la guerra, una mujer fuerte y luchadora, cuida de ella con todo su amor y le enseña a valorar la vida.

It was September 14, 1814, and America and Great Britain were at war. Frances Scott Key watched from the deck of a British ship, where he was being held captive, as cannons exploded around them. After 25 hours, the fighting ceased and Key peered through the clearing smoke, looking for some sign as to the outcome of the battle. Was the American flag still flying? His wartime experience inspired Key to write a poem, which was later set to music and became America’s national anthem. This book tells the story of the inspiration behind our national anthem, which helped transform the flag into a...