Pettijohn, F. J. (Francis John), 1904- Memoirs of an unrepentant field geologist : a candid profile of some geologists and their science, 1921-1981 / F.J. Pettijohn.

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Pettijohn, F. J. (Francis John), 1904-

Memoirs of an unrepentant field geologist : a candid profile of some geologists and their science, 1921-1981 / F.J. Pettijohn.

Pettijohn, F. J. (Francis John), 1904-

Geologists -- United States -- Biography.