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Michael Helfert has written 2 work(s)
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Hardcover:
9780792237150 | Deluxe edition (Natl Geographic Society, June 1, 1996), cover price $52.00 | About this edition: Photographs taken from space capture the natural forces that have shaped the planet, and human impact on Earth
Paperback:
9780792261865 | Reprint edition (Natl Geographic Society, October 1, 2003), cover price $25.00 | About this edition: Photographs taken from space capture the natural forces that have shaped the planet, and human impact on Earth
Hardcover:
9780792237143 | Natl Geographic Society, October 1, 1996, cover price $40.00 | About this edition: Photographs taken from space capture the natural forces that have shaped the planet, and human impact on Earth
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