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Mercer shales overlain by Homewood sandstone

MLA citation style
Graeber, C. K. “Mercer Shales Overlain By Homewood Sandstone”. no date. 4723, 1933June .
APA citation style
Graeber, C. K. (1933). Mercer shales overlain by Homewood sandstone. 4723. Retrieved from https://digitalarchives.powerlibrary.org/papd/islandora/object/papd%3A69281
Chicago citation style
Graeber, Charles Karsner. “Mercer Shales Overlain By Homewood Sandstone”. 4723, Pennsylvania Geological Survey - Historical Photographs, June 24, 1933. https://digitalarchives.powerlibrary.org/papd/islandora/object/papd%3A69281.
Note: These citations are programmatically generated and may be incomplete.