Palæontological Report of the Princeton Scientific Expedition of 1877 by Osborn et al.

Palæontological Report of the Princeton Scientific Expedition of 1877

Speir, Francis & Scott, William Berryman & Osborn, Henry Fairfield

Palæontological Report of the Princeton Scientific Expedition of 1877

Speir, Francis & Scott, William Berryman & Osborn, Henry Fairfield