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Front Matter

Articles

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Technology of Clays p. 27-318
S. W. Beyer and I. A. Williams

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Chemistry of Clays p. 319-346
J. B. Weems

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The Geology of Clays p. 377-554
S. W. Beyer and I. A. Williams

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Tests of Clay Products p. 555-620
A. Marston

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Directory of Iowa Clay Workers p. 621-644
S. W. Beyer and I. A. Williams

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Mineral Production of Iowa in 1903 p. 645-655
S. W. Beyer

Back Matter