[071-17] Lingulid, Rhynchonellid, and Spiriferid Brachiopods from the Shumway Cyclothem, Mattoon Formation, Pennsylvanian of Illinois

Scheihing, Mark H. and Ralph L. Langenheim, Jr.

Lingulid, Rhynchonellid, and Spiriferid Brachiopods from the Shumway Cyclothem, Mattoon Formation, Pennsylvanian of Illinois

Recent Advances in Spectroscopy* Author: Michelson, A.A.

Farm Water Supply Author: Bartow, Edward

The Relation of the State Academy of Science to the Natural History Surrounding the Chicago Academy of Sciences Author: Baker, F.C.

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Recent Advances in Spectroscopy* Author: Michelson, A.A.

Farm Water Supply Author: Bartow, Edward

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