@book{26633,
	author = {Roberts, Joseph K.},
	title = {The geology of the Virginia Triassic,},
	publisher = {Michie Co., printers]},
	year = {1928.},
	series = {Virginia. Geological survey. Bulletin 29},
	address = {University, Va.},
	note = {At head of title: State of Virginia. Conservation and Development Commission.}
}