Rotary drilling in Illinois
By: by George V. Cohee
Contributors: Illinois State Geological Survey
Series: Illinois State Geological Survey. Circular -- no. 56; Circular (Illinois State Geological Survey) -- no. 56.
Publisher: Illinois State Geological Survey
Published: 1939
Place of publication: Urbana
Language: eng
Number of pages: 175
Subjects: Oil wells; Oil well drilling; Equipment and supplies
Notes: Cover title.

"Reprinted from the Transactions, Illinois State Academy of Science, vol. 31, no. 2, pp. 173-175, 1939."