[035-47]The “Trenton” Near Morris, Illinois
Bieber, C.L. The “Trenton” Near Morris, Illinois 035-47-print
[037-14]Comparison of Several Decorah Horizons in Northern Illinois
Bieber, C.L. Comparison of Several Decorah Horizons in Northern Illinois 037-14-print
[040-20]Structural Trends in the Pecatonica Quadrangle Based upon Decorah Stratigraphy
Bieber, C.L. Structural Trends in the Pecatonica Quadrangle Based upon Decorah Stratigraphy 040-20-print