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John Ludwickson
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Missouri National Recreational River
John Ludwickson · Nebraska State Historical Society
292 sayfa · 1981
Antiquities / History / Indians of North America / Excavations (Archaeology)
Archaeological investigations in the proposed midstate irrigation project
Dale R. Henning, John Ludwickson, Peter Bleed, United States. National Park Service · Sine nomine
126 sayfa · 1977
Excavations (Archaeology) / Indians of North America / Antiquities