Description based on: 25.
Nos. <25-> called also 4th series.
Mode of access: Internet.
bib
http://hdl.handle.net/2027/uiug.30112026914348
http://hdl.handle.net/2027/uiug.30112026914355
http://hdl.handle.net/2027/uiug.30112026914413
http://hdl.handle.net/2027/uiug.30112026914447
http://hdl.handle.net/2027/uiug.30112060787626
http://hdl.handle.net/2027/uiug.30112060787634
http://hdl.handle.net/2027/uiug.30112060787642
http://hdl.handle.net/2027/uiug.30112060787659
http://hdl.handle.net/2027/uiug.30112060787667
http://hdl.handle.net/2027/uiug.30112060787691
http://hdl.handle.net/2027/uiug.30112060787709
http://hdl.handle.net/2027/uiug.30112060787717
http://hdl.handle.net/2027/uiug.30112060787725
http://hdl.handle.net/2027/uiug.30112060787733
http://hdl.handle.net/2027/uiug.30112026914298
http://hdl.handle.net/2027/uiug.30112026914314
http://hdl.handle.net/2027/uiug.30112026914322
http://hdl.handle.net/2027/uiug.30112026914389
http://hdl.handle.net/2027/uiug.30112026914421
http://hdl.handle.net/2027/uiug.30112026914496
http://hdl.handle.net/2027/uiug.30112026914603
http://hdl.handle.net/2027/uiug.30112026914926
http://hdl.handle.net/2027/uiug.30112026914934
http://hdl.handle.net/2027/uiug.30112026914942
eng
Columbus : The Survey,
Bulletin (Ohio. State Geologist)
Bulletin (Ohio. Division of Geological Survey)
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