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	1.	Correlation papers ; Cambrian / by Charles Doolittle Walcott. by Walcott, Charles D. (Charles Doolittle), 1850-1927 Series: United States. Bulletin ; 81. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Govt. Print. Off., 1891 Availability: No items available. Add to cart (remove)
	2.	The North American continent during Cambrian time / by Charles D. Walcott. by Walcott, Charles D. (Charles Doolittle), 1850-1927 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Gov't. print. off., 1892 Availability: No items available. Add to cart (remove)
	3.	The geology of Steeprock lake, Ontario, by Andrew C. Lawson. Notes on fossils from limestone of Steeprock lake, Ontario, by Charles D. Walcott. by Lawson, Andrew C. (Andrew Cowper), 1861-1952 Walcott, Charles D. (Charles Doolittle), 1850-1927 Series: Memoir (Geological Survey of Canada) ; 28 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Ottawa, Government printing bureau, 1912 Availability: No items available. Add to cart (remove)
	4.	Cambrian Brachiopoda, by Charles D. Walcott. by Walcott, Charles D. (Charles Doolittle), 1850-1927 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, Govt. print. off., 1912 Availability: No items available. Add to cart (remove)

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