John Adams Bownocker
Dr. John Adams Bownocker (March 11, 1865 – October 20, 1928) was an American geologist and educator. Provided by Wikipedia
1
Published: 1903
Superior document: Bulletin / Geological Survey of Ohio 4. Ser., 1
2
Published: 1906
Superior document: Bulletin / Geological Survey of Ohio 4. Ser., 13