Stratigraphic boundary problems: Permian and Triassic of Wes...

by Bernhard Kummel

Lexicon of Permian stratigraphic names of the Permian Basin ...

by West Texas Geological Society

Stratigraphic interpretation of the Pennsylvanian-Permian sy...

by Grant Steele

Pre-Permian Geology of Central and Eastern Europe

by R. D. Dallmeyer, W. Franke

The Mauzy Formation, a new stratigraphic unit of Permian age...

by Thomas M. Kehn

The Permian extinction and the Tethys

by A. M. Celâl Şengör

Geology and Permian paleomagnetism of the Merano region

by G. F. L. Dietzel

The Permian and Triassic of Kingscourt Outlier, Ireland, a p...

by H. Visscher

Stratigraphic and paleontologic studies of the Pennsylvanian...

by Wallace Lee

Measured stratigraphic sections of the Lower Permian Nilawah...

by B. E. Law

Measured stratigraphic sections of the Lower Permian Nilawah...

by B. E Law

The Permian and Pennsylvanian geology of Wyoming

by Wyoming Geological Association. Field Conference

East-West cross section through Southern Permian basin of We...

by West Texas Geological Society. Stratigraphic Problems Committee

Core drilling and stratigraphic analysis of Lower Permian ro...

by James R. Chaplin

Stratigraphic analysis of the Permian Chase Group in norther...

by James R. Chaplin

Stratigraphic analysis of the Upper Devonian Woodford Format...

by John B. Comer

Stratigraphic analysis of the Upper Devonian Woodford Format...

Geology and Permian coal resources of the Collie Basin, West...

by G. Le Blanc Smith

Igneous geology of the Wichita Mountains and economic geolog...

by Kenneth Sutherland Johnson

Stratigraphic relations and tectonic significance of rocks n...

by Paul Stone