Vol. 238, Issue 9, 1940September 01, 1940 EDT
The Box Butte Member of the Sheep Creek Formation, Nebraska
The Box Butte Member of the Sheep Creek Formation, Nebraska
Cady, R. C. (1940). The Box Butte member of the Sheep Creek Formation, Nebraska. American Journal of Science, 238(9), 663–667. https://doi.org/10.2475/ajs.238.9.663
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