@book{27637,
	author = {Lang, Walter Barnes, and King, Philip Burke,},
	title = {Clay investigations in the southern states 1934-35.},
	publisher = {U.S. Govt. print. off.,},
	year = {1940.},
	series = {U.S. Geological survey. Bulletin},
	address = {Washington,},
	note = {Projects conducted by the Geological survey under grants from the Federal emergency administration of public works.}
}