Author: COBBAN, W.A. & G.R. SCOTT
Title: Stratigraphy and ammonite fauna of the Graneros Shale and Greenhorn Limestone near Pueblo, Colorado.
Description: 1972. United States Geological Survey Prof. Pap. 645; 108 pp. 52 fig./phot. 39 plts. h.t. with ammonites, 2 fold. plts. with columnar sections loosely inserted. Plain wrps. contents very good, 4to.

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