Trends in petroleum geology
By: by A. I. Levorsen...
Series: (In Smithsonian institution.  Annual report, 1942 p. 227-234)
Published: 1943
Place of publication: Washington
Language: eng
Subjects: Petroleum -- Geology.
Notes: "Read at the fiftieth anniversary celebration of the University of Chicago, September 1941.  Reprinted...from Economic geology, vol. 36, November 1941."