Coal lands. Valuation of public coal lands: Value of coal land, by George H. Ashley; Depth and minimum thickness of beds as limiting factors in valuation, by Cassius A. Fisher.
Publication Title:
Coal lands. Valuation of public coal lands: Value of coal land, by George H. Ashley; Depth and minimum thickness of beds as limiting factors in valuation, by Cassius A. Fisher.
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Coal lands. Valuation of public coal lands: Value of coal land, by George H. Ashley; Depth and minimum thickness of beds as limiting factors in valuation, by Cassius A. Fisher.