Vol. s3-41, Issue 244, 1891April 01, 1891 EDT
The Redrock Sandstone of Marion County, Iowa
The Redrock Sandstone of Marion County, Iowa
Charles Rollin Keyes,
Keyes, C. R. (1891). The Redrock sandstone of Marion County, Iowa. American Journal of Science, s3-41(244), 273–276. https://doi.org/10.2475/ajs.s3-41.244.273