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	1.		Geological survey circular. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1967- Availability: No items available. Save to lists Add to cart (remove)
	2.		Geological survey circular. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1967- Availability: No items available. Save to lists Add to cart (remove)
	3.		Geological survey circular. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1967- Availability: No items available. Save to lists Add to cart (remove)
	4.		Geological survey circular. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1967- Availability: No items available. Save to lists Add to cart (remove)
	5.		Palaeontology. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1957- Availability: No items available. Save to lists Add to cart (remove)
	6.		Palaeontology. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1957- Availability: No items available. Save to lists Add to cart (remove)
	7.		Palaeontology. by U.S. Department of the Interior Material type: Continuing resource Publication details: Washington, D.C. : U.S. Department of the Interior, 1957- Availability: No items available. Save to lists Add to cart (remove)