Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers
Front Matter
Front Matter, Iowa Geological Survey, Volume XXIX, Annual Reports, 1919 and 1920, with Accompanying Papers
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • a-h
Article
Annual Report of the Director
- George F. Kay
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • i-xx
Mineral Production in Iowa in 1919 and 1920
- James H. Lees
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • xxi-xlviii
Petroleum and Natural Gas in Iowa
- Jesse V. Howell
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • 1-48
The Origin and History of Extinct Lake Calvin
- Walter H. Schoewe
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • 49-222
The Missouri Series of the Pennsylvanian System in Southwestern Iowa
- John L. Tilton
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • 223-314
New Echinoderms from the Maquoketa Beds of Fayette County, Iowa
- Arthur Ware Slocom
- August F. Foerste
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • 315-384
Echinoderms of the Iowa Devonian
- A. O. Thomas
Volume 29 • 1921 • Annual Reports, 1919 and 1920, with Accompanying Papers • 385-552