Structure of Herrin (no. 6) Coal Bed in Marion and Fayette Counties and Adjacent Parts of Bond, Clinton, Montgomery, Clay, Effingham, Washington, JeffRaymond SieverUitverkocht4,3Volgen
Petrology and Sedimentation of Upper Chester Sandstones; Report of Investigations No. 170Raymond SieverUitverkocht4,3Volgen
Classification of the Pennsylvanian Rocks of Illinois as of 1956; Illinois State Geological Survey Circular 217Raymond SieverUitverkocht4,3Volgen
