Illinois State Geological Survey Manuscript Silica refractory material in southern Illinois IL
Dates
Dataset Reference Date
2019-11-21
Info Date
1918
Summary
Illinois State Geological Survey Manuscript Title: Silica refractory material in southern Illinois Author: Schroyer, C.R., Call Number: MS Schroyer, C.R. #1 Location Record 3 of 10
Summary
Illinois State Geological Survey Manuscript Title: Silica refractory material in southern Illinois Author: Schroyer, C.R., Call Number: MS Schroyer, C.R. #1 Location Record 3 of 10