Roanoke the lost colony por Hunt, Angela Elwell, 1957-

Costly information in firm transformation, exit or persistent failure por Zucker, Lynne G.

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Great moments in science experiments and readers theatre por Haven, Kendall F.

Observations made during a voyage round the world por Forster, Johann Reinhold 1729-1798

Fingerprints of the gods a quest for the beginning and the end por Hancock, Graham

Revealing America image and imagination in the exploration of North America

California criminal discovery por Pipes, Douglas 1943-

Christopher Columbus explorer of the new world.

Lucky science accidental discoveries from gravity to velcro, with experiments por Roberts, Royston M.

Whon famous experiments for the young scientist por Wood, Robert W 1933-