More Books:

The Formation of Geodes with Remarks on the Silicification of Fossils
Language: en
Pages: 22
Authors: Ray Smith Bassler
Categories: Geodes
Type: BOOK - Published: 1908 - Publisher:

Journal of Interdisciplinary Science Topics, Volume 3
Language: en
Pages:
Authors: Cheryl Hurkett
Categories:
Type: BOOK - Published: - Publisher: Lulu.com

The Fabulous Keokuk Geodes: Their origin, formation and development in the Mississippian lower Warsaw beds of southeast Iowa and adjacent States
Language: en
Pages:
The Mineral Collector
Language: en
Pages:
Authors:
Categories: Mineralogy
Type: BOOK - Published: 1898 - Publisher:

The Swiss Cross
Language: en
Pages:
Authors:
Categories: Natural history
Type: BOOK - Published: 1887 - Publisher:

On the
Language: en
Pages: 5
Authors: Samuel J. Wallace
Categories:
Type: BOOK - Published: 1878 - Publisher:

The American Journal of Science
Language: en
Pages:
Authors:
Categories: Science
Type: BOOK - Published: 1824 - Publisher:

The Swiss Cross
Language: en
Pages:
Authors: Harlan Hoge Ballard
Categories: Natural history
Type: BOOK - Published: 1887 - Publisher:

Iowa's Geological Past
Language: en
Pages: 440
Authors: Wayne I. Anderson
Categories: History
Type: BOOK - Published: 1998 - Publisher: University of Iowa Press

Iowa's rock record is the product of more than three billion years of geological processes. The state endured multiple episodes of continental glaciation during
Iowa's Minerals
Language: en
Pages: 256
Authors: Paul Garvin
Categories: Nature
Type: BOOK - Published: 2010-09-13 - Publisher: University of Iowa Press