Miocene Floras of the Columbia Plateau. Part I. Composition and Interpretation. By R.W. Chaney. Part II. Systematic Considerations. By R.W. Chaney and Daniel I. Axelrod
Pliocene Floras of California and Oregon, Edited by Ralph W. Chaney; Contributors: Ralph W. Chaney, Carlton Condit [and] Daniel I. Axelrod
Pliocene Floras of California and Oregon. Edited by R.W. Chaney. Contributors: R.W. Chaney, Carlton Condit, Daniel I. Axelrod. (Contributions to Paleontology.) [With Tables.].