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Unhealthy boundaries written in white chalk on a black chalkboard isolated on white Stock Photo | Adobe Stock
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Transactions . y 8feet of soil and clay. At the center of Section 3, 13 south, 32west, a well 33 feet deep did not strike the chalk. Wells dugnear the eastern boundary
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Chemostratigraphy of the Cenomanian-Turonian boundary section (Chalk... | Download Scientific Diagram
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