Structure map of the top of Herrin (no. 6) coal bed, Clay County

Chicago citation style
Illinois State Geological Survey. Structure map of the top of Herrin (no. 6) coal bed, Clay County. 1946. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/sic_maps/id/69. (Accessed April 19, 2024.)
APA citation style
Illinois State Geological Survey, (1946) Structure map of the top of Herrin (no. 6) coal bed, Clay County. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/sic_maps/id/69
MLA citation style
Illinois State Geological Survey. Retrieved from the Digital Public Library of America <http://collections.carli.illinois.edu/cdm/ref/collection/sic_maps/id/69>.
Note: These citations are programmatically generated and may be incomplete.