American Permian vertebrates (c1911) (18133737056), 1825

Title: american permian vertebrates identifier: americanpermianv00will (find matches) year: c1911 (c190s) authors: williston, samuel wendell, 1851-1918 subjects: vertebrates, fossil; paleontology -- permian; paleontology -- united states publisher: chicago, ill. : the university of chicago press contributing library: mblwhoi library digitizing sponsor: mblwhoi library. Date: 1825.