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	1.	Fresh-water invertebrates of the United States. by Pennak, R.W [author] Material type: Text; Literary form: Not fiction Publisher: New York Ronald Press Company 1953 Availability: Items available for loan: Library of Invertebrates non-insects (1). Add to cart (remove)
	2.	Record of the Rocks. The geological story of Eastern North America by Richards, H.G [author] Material type: Text; Literary form: Not fiction Publisher: New York The Ronald Press Company 1953 Availability: Items available for loan: Library of General Geology (1). Add to cart (remove)
	3.	Elements of applied hydrology. by Johnstone, Don [author] Cross, William P [author] Material type: Text; Literary form: Not fiction Publisher: New York The Ronald Press Company 1949 Availability: Items available for loan: Library of General Geology (1). Add to cart (remove)
	4.	A Regional Approach to Historical Geology by Clark, Th.H [author] Material type: Text; Literary form: Not fiction Publisher: New York The Ronald Press Company 1960 Availability: Items available for loan: Library of General Geology (1). Add to cart (remove)

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