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Start Over Year 1956 Publisher Geological Survey and Water Resources (Rolla, Mo.) Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. Mendon quadrangle, Illinois-Missouri : 15 minute series (topographic).

Maps University Of Illinois Urbana Champaign Public content
1956. Geological Survey (U.S.). Contour interval 20 feet.;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods, 1946.";Reli... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Geological Survey and Water Resources (Rolla, Mo.).

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