John K. Tucker and Gary L. Paukstis
Occurrence of the Nautiloid Genus Foordiceras in the Pennsylvanian Period of North America
John K. Tucker and Gary L. Paukstis
Occurrence of the Nautiloid Genus Foordiceras in the Pennsylvanian Period of North America
Recent Advances in Spectroscopy* Author: Michelson, A.A.
The Relation of the State Academy of Science to the Natural History Surrounding the Chicago Academy of Sciences Author: Baker, F.C.
Recent Advances in Spectroscopy* Author: Michelson, A.A.