Calcareous Foraminifera in the Brownwood shale near Bridgeport, Texas / by Helen Jeanne Plummer. Foraminifera of the Cisco group of Texas, by J.A. Cushman and J.A. Waters, Bureau of economic geology ...
Series Titles:
The University of Texas bulletin ; no. 3019. May 15, 1930 University of Texas bulletin ; no. 3019.