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	1.	Kaolin deposits of southern Pike County, Arkansas, by Paul G. Herold and George R. Heyl. by Herold, Paul George, 1909- Heyl, George Richard, 1909- [joint author.] Series: Arkansas. Geological Survey, 1923- Bulletin 7 Material type: Text; Format: print ; Literary form: Not fiction Publication details: Little Rock, 1942 Availability: No items available. Add to cart (remove)
	2.	Geology of the fire clay districts of east central Missouri, by H. S. McQueen ... With chapters on the results of X-ray analyses of the clays and the results of firing behavior tests, by Paul G. Herold. by McQueen, Henry Silliman, 1900- Herold, Paul George, 1909- Series: Missouri. Geological survey and water resources. [Reports] Vol. XXVIII, 2d ser Material type: Text; Format: print ; Literary form: Not fiction Publication details: Rolla, Mo., Missouri Geological survey and water resources, 1943 Availability: No items available. Add to cart (remove)
	3.	Study of Missouri shales for lightweight aggregate, by P. G. Herold [and others] by Herold, Paul George, 1909- Material type: Text; Format: print ; Literary form: Not fiction Publication details: Rolla, 1958 Availability: No items available. Add to cart (remove)

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