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pt. I. County and regional geology: Geology of the middle region of western Iowa and other counties, by O. H. St. John. Northwestern Iowa; Middle region of northern Iowa. Geology of the coal counties, by C. A. White. pt. II. Mineralogy, lithology, and chemistry; Peat and petroleum; Gypsum and other sulphates of the alkaline earths; Building materials, metals, and miscellaneous substances; by C. A. White. Chemistry by R. Emery. Appendices: A. Railroad elevations by civil engineers. B. Catalogue of birds, by J. A. Allen. C. Land surveys, by C. W. Irish
pt. I. County and regional geology: Geology of the middle region of western Iowa and other counties, by O. H. St. John. Northwestern Iowa; Middle region of northern Iowa. Geology of the coal counties, by C. A. White. pt. II. Mineralogy, lithology, and chemistry; Peat and petroleum; Gypsum and other sulphates of the alkaline earths; Building materials, metals, and miscellaneous substances; by C. A. White. Chemistry by R. Emery. Appendices: A. Railroad elevations by civil engineers. B. Catalogue of birds, by J. A. Allen. C. Land surveys, by C. W. IrishIowa Geological Survey
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Iowa Geological Survey
pt. I. County and regional geology: Geology of the middle region of western Iowa and other counties, by O. H. St. John. Northwestern Iowa; Middle region of northern Iowa. Geology of the coal counties, by C. A. White. pt. II. Mineralogy, lithology, and chemistry; Peat and petroleum; Gypsum and other sulphates of the alkaline earths; Building materials, metals, and miscellaneous substances; by C. A. White. Chemistry by R. Emery. Appendices: A. Railroad elevations by civil engineers. B. Catalogue of birds, by J. A. Allen. C. Land surveys, by C. W. Irish

pt. I. County and regional geology: Geology of the middle region of western Iowa and other counties, by O. H. St. John. Northwestern Iowa; Middle region of northern Iowa. Geology of the coal counties, by C. A. White. pt. II. Mineralogy, lithology, and chemistry; Peat and petroleum; Gypsum and other sulphates of the alkaline earths; Building materials, metals, and miscellaneous substances; by C. A. White. Chemistry by R. Emery. Appendices: A. Railroad elevations by civil engineers. B. Catalogue of birds, by J. A. Allen. C. Land surveys, by C. W. Irish

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Discover more books like pt. I. County and regional geology: Geology of the middle region of western Iowa and other counties, by O. H. St. John. Northwestern Iowa; Middle region of northern Iowa. Geology of the coal counties, by C. A. White. pt. II. Mineralogy, lithology, and chemistry; Peat and petroleum; Gypsum and other sulphates of the alkaline earths; Building materials, metals, and miscellaneous substances; by C. A. White. Chemistry by R. Emery. Appendices: A. Railroad elevations by civil engineers. B. Catalogue of birds, by J. A. Allen. C. Land surveys, by C. W. Irish