Rotary drilling in Illinois,
by George V. Cohee.
APA Citation
Cohee, G. Vincent., Illinois State Geological Survey. (1939). Rotary drilling in Illinois. Urbana: Illinois State Geological Survey.
MLA Citation
Cohee, George Vincent, 1907-, and Illinois State Geological Survey. Rotary Drilling In Illinois. Urbana: Illinois State Geological Survey, 1939.
Warning: These citations may not always be complete (especially for serials).