A contribution to the history of the vertebrata of the trias of North America /
Cope, E. D.
A contribution to the history of the vertebrata of the trias of North America / by E. D. Cope - [S.l. : s.n.], 1887 - 209-228 p. : ill. ; 24 cm - Proceedings of the American Philosophical Society .
A contribution to the history of the vertebrata of the trias of North America / by E. D. Cope - [S.l. : s.n.], 1887 - 209-228 p. : ill. ; 24 cm - Proceedings of the American Philosophical Society .