Articles:

Arthur Louis Day

The hot springs problem
Geological Society of America Bulletin 1939 v. 50, p. 317-336. [Abstract]  

Charles Whitney Gilmore

A review of recent progress in reptilian paleontology
Geological Society of America Bulletin 1939 v. 50, p. 337-348. [Abstract]  

Nevin M. Fenneman

The rise of physiography
Geological Society of America Bulletin 1939 v. 50, p. 349-359. [Abstract]  

Frederick Gardner Clapp

The problem of petroleum
Geological Society of America Bulletin 1939 v. 50, p. 361-374. [Abstract]  

William Berryman Scott

Vertebrate paleontology since 1888
Geological Society of America Bulletin 1939 v. 50, p. 375-386. [Abstract]  

Reginald Aldworth Daly

Regional departures from ideal isostasy
Geological Society of America Bulletin 1939 v. 50, p. 387-419. [Abstract]  

Walter Hermann Bucher

Deformation of the earth's crust
Geological Society of America Bulletin 1939 v. 50, p. 421-431. [Abstract]  

Charles Kenneth Leith

The role of minerals in the present international situation
Geological Society of America Bulletin 1939 v. 50, p. 433-441. [Abstract]  

John Campbell Merriam

Contribution of geology to shaping of ideas on the meaning of history
Geological Society of America Bulletin 1939 v. 50, p. 443-447. [Abstract]  

Arthur Philemon Coleman

Ice ages in the geological column
Geological Society of America Bulletin 1939 v. 50, p. 449-451. [Abstract]  

George Frederick Kay

Pleistocene history and early man in America
Geological Society of America Bulletin 1939 v. 50, p. 453-463. [Abstract]  

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