@book{26984,
	author = {Plummer, Helen Jeanne. and Cushman, Joseph A.},
	title = {Calcareous Foraminifera in the Brownwood shale near Bridgeport, Texas,},
	publisher = {[The University of Texas]},
	year = {1930.},
	series = {The University of Texas bulletin},
	address = {Austin}
}