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Nature
Rocks & Minerals

Rocks & Minerals

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Robert A. Christman
The Geology of Mt. Mansfield State Forest
en
Books
H.G.Seeley
The Ornithosauria
en
Books
Eugene W. Hilgard
Soils
en
Books
Paul Kreingold
Potomac Marble
en
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Albert Charles Seward
Links With the Past in the Plant World
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Elbert A. King
Texas Gemstones
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John Ball
The geography and geology of south-eastern Egypt
en
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