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Subject: "Petroleum Geology."
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HathiTrust Digital Library
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Silurian

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Current results range from 1949 to 1976

1.
Silurian reefs in southwestern Indiana and their relation to petroleum accumulation
Author
Becker, Leroy E.
Published
Bloomington, Ind. : Geological Survey, 1976.
Online
no.19(1976)
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online
2.
The Niagaran reefs in Illinois and their relation to oil accumulation
Author
Lowenstam, Heinz Adolf, 1912-
Published
Urbana : Illinois State Geological Survey, c1949.
Online
Report of Investigations No. 145
Location
HathiTrust Digital Library >> Online Resource
Format
Books / Online