Volume 30 • 1923 • Annual Reports, 1921 and 1922, with Accompanying Papers
Front Matter
Front Matter, Iowa Geological Survey, Volume XXX, Annual Reports, 1921 and 1922, with Accompanying Papers
1923-01-01 Volume 30 • 1923 • Annual Reports, 1921 and 1922, with Accompanying Papers • a-4
Article
Letter of Transmittal
George F. Kay
1923-01-01 Volume 30 • 1923 • Annual Reports, 1921 and 1922, with Accompanying Papers • 5-6
Mineral Production in Iowa in 1921 and 1922
James H. Lees
1923-01-01 Volume 30 • 1923 • Annual Reports, 1921 and 1922, with Accompanying Papers • 7-32
The Stratigraphy of the Mississippian Formations of Iowa
Francis M. Van Tuyl
1923-01-01 Volume 30 • 1923 • Annual Reports, 1921 and 1922, with Accompanying Papers • 33-360