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Title: Iowa Geological Survey, Vol. XXV. Annual report, 1914, with accompanying papers.
Description: 1914, [road and concrete materials]. 627 pp. 53 fig. 72 plts. a.o.: Howell: Iron ore deposits near Waukon; Leighton: Pleistocene history of Iowa River Valley; Slocom: Trilobites from the Maquoketa Beds; Van Tuyl: The origin of dolomite; Lees: Des moines Valley. Orig. cloth, gilt, libr. stamp on first endpaper, very good.

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