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by Frakes, Lawrence A.
Harrisburg, Pa. : Commonwealth of Pennsylvania [Department of Internal Affairs, Bureau of Topographic and Geological Survey], 1967
Harrisburg, Pa. : Commonwealth of Pennsylvania [Department of Internal Affairs, Bureau of Topographic and Geological Survey], 1967
Thesis
Book
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by Sherwood, W. Cullen (William Cullen)
Harrisburg, PA. : Commonwealth of Pennsylvania [Department of Internal Affairs, Bureau of Topographic and Geological Survey], 1964
Harrisburg, PA. : Commonwealth of Pennsylvania [Department of Internal Affairs, Bureau of Topographic and Geological Survey], 1964
Thesis
Book
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by Los, Sietse Oene
Greenbelt, Md. : Hanover, MD : National Aeronautics and Space Administration, Goodard Space Flight Center ; Available from NASA Center for AeroSpace Information, 1998
Greenbelt, Md. : Hanover, MD : National Aeronautics and Space Administration, Goodard Space Flight Center ; Available from NASA Center for AeroSpace Information, 1998
Government Document
Thesis
Book