@book{25849,
	author = {Phalen, William Clifton, and Kentucky.},
	title = {Report on the phosphate rocks of central Kentucky.},
	publisher = {[State Journal Company, Printer]},
	year = {1915.},
	address = {Frankfort, Ky.},
	note = {At head of title: Kentucky. Geological survey ... in co-operation with the United States Geological survey.}
}