As command module pilot for the Apollo 15 mission to the moon in 1971, Al Worden flew on what is widely regarded as the greatest exploration mission that humans have ever attempted. He spent six days orbiting the moon, including three days...
Short texts about a family. This series is for those who would like to learn how to compose a text about a family giving the examples and rich vocabulary on this...
Famous Men of the Middle Ages features attractive biographical sketches of thirty-five of the most prominent characters in the history of the Middle Ages, from the barbarian invasions to the invention of the printing press. Each story in this book...