Permian brachiopods of west texas, II
Cooper, G. Arthur, Grant, Richard E.
Permian brachiopods of west texas, II - Washington 1974 - 233-793 p. - Texas Smithsonian Contributions to Paleobiology. No. 15 .
Permian brachiopods of west texas, II - Washington 1974 - 233-793 p. - Texas Smithsonian Contributions to Paleobiology. No. 15 .