@book{71384,
	author = {Liles, K. J. and Heystek, H. and United States},
	title = {Evaluating clay resources from Clay County, Ga., for structural clay products},
	publisher = {Dept. of the Interior, Bureau of Mines},
	year = {1980.},
	series = {Report of investigations - Bureau of Mines},
	address = {Washington}
}