National Geologic Map Database
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                Title: Cambrian-Ordovician boundary in the Adirondack-border region
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                Author(s): Wheeler, R.R.
            
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                    Publishing Organization: American Journal of Science
            
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                Series and Number: American Journal of Science v. 240, no. 7 [p. 518-524]
            
- Publication Date: 1942
- Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.