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National Geographic Magazine, December 1970: 3 Articles on *Our Ecological Crisis*
Frederick G. Vosburgh
Single Issue Magazine (National Geographic Society, March 15, 1970)Our geological crisis; Land diving with the Pentecost Islanders; Old Salem, Morning Star of Moravian Faith; Scientist studies Japan's fantastic long-tailed fowl.
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The Revolutionary War
Bart McDowell, Frederick G. Vosburgh
Library Binding (National Geographic Society, Washington, D.C., March 15, 1967)America's Fight For Freedom