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Ray A. Williamson

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Stand Alone

Archaeoastronomy in the Americas
Science and technology in historic preservation
Optical Manufacturing and Testing X 26-27 August 2013, San Diego, California, United States
Commercial Observation Satellites: At the Leading Edge of Global Transparency
Earth & sky: Visions of the cosmos in Native American folklore
Earth & Sky: Visions of the Cosmos in Native American Folklore