Author: JONES, D.L. ET AL.
Title: Structural ans stratigraphic significance of the Buchia zones in the Colyear Springs-Paskenta area, California.
Description: 1969. United States Geological Survey Prof. Pap. 647-A; pp. 1-24, 5 fig. 5 plts. with Buchia h.t. Orig. wrps. very good, 4to.

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