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Title: Iowa Geological Survey, Vol. XX. Annual report, 1909, with accompanying papers.
Description: 1910, 542 pp. 42 fig. 42 plts. 10 fold. & col. geol. maps of counties: Butler, Grundy, Hamilton, Wright, Iowa, Wayne, Poweshiek, Harrison, Monona, and Davis. Orig. wrappers with libr. stamp, base of spine slightly worn, contents very good.

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