The Lance Formation--petrography and stratigraphy, Powder River Basin and nearby basins, Wyoming and Montana
Washington, D. C. U. S. Geological Survey, 1992. First Edition. Paperback. Unmarked. Eight folded plates in four separate pockets in rear of book. Author's copy. Some bumping onf cover edges. ; Book Description; Spine has no signs of creasing. Pages are clean and not marred by notes or folds. Covers..... More


