DOVER, J.H. ET AL. - Ordovician and Silurian Phi Kappa and Trail Creek formations, Pioneer Mountains, Central Idaho; Stratigraphic and structural revisions, and new data on graptolite faunas.

1980. United States Geological Survey Prof. Pap. 1090; 54 pp. 14 fig. 5 plts. with graptolites h.t. 1 fold. geol. map & sections in pocket. Orig. wrps. very good, 4to.

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