Illinois-Iowa, Keithsburg quadrangle

Chicago citation style
Geological Survey (U.S.). Illinois-Iowa, Keithsburg quadrangle. 1941. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/a4813420-994e-0134-2096-0050569601ca-8. (Accessed March 28, 2024.)
APA citation style
Geological Survey (U.S.), (1941) Illinois-Iowa, Keithsburg quadrangle. Retrieved from the Digital Public Library of America, https://digital.library.illinois.edu/items/a4813420-994e-0134-2096-0050569601ca-8
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <https://digital.library.illinois.edu/items/a4813420-994e-0134-2096-0050569601ca-8>.
Note: These citations are programmatically generated and may be incomplete.