Lugenbeal, Marilyn Patchin.
Lugenbeal, Marilyn Patchin.
Evidences bearing on the time involved in the deposition of the fossil forests of the Specimen Creek area, Yellowstone National Park, Montana.
Evidences bearing on the time involved in the deposition of the fossil forests of the Specimen Creek area, Yellowstone National Park, Montana.
Evidences bearing on the time involved in the deposition of the fossil forests of the Specimen Creek area, Yellowstone National Park, Montana.
Lugenbeal, Marilyn Patchin.