Item #46123 New Methods for Estimating the Contents of Highly Plicated Coal Beds as Applied to the Anthracite Fields of Pennsylvania. Charles A. Ashburner, Arthur Winslow.

New Methods for Estimating the Contents of Highly Plicated Coal Beds as Applied to the Anthracite Fields of Pennsylvania.

n.p. n.p., 1883. 16 pp. Illus. with 1 b/w drawing. Sm. 4to. Paper wrappers. Author's Edition. Very good minus, folded, wrappers soiled, starting to separate, inked in notation along top margin of front wrapper, marginal soiling to contents. Item #46123

On Cover: "Paper Read Before the Engineers' Club of Philadelphia. Signed Compliments of the author

Price: $25.00

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