Miocene floras of the Columbia Plateau.
Chaney, Ralph W.(Ralph Works),1890-1971.
Axelrod, Daniel I.
Washington : Carnegie Institution of Washington,
1959.
Bibliography: p. 225-229.
Part 1. Composition and interpretation / by Ralph W. Chaney.--Part 2. Systematic considerations / by Ralph W. Chaney and Daniel I. Axelrod.
Paleobotany
Paleobotany