Biennial report for 1911 and 1912; administrative report and economic and geological papers

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099 ‡a557.58 ‡aIl62 no.23
110 2 ‡aIllinois State Geological Survey.
245 1 0 ‡aBiennial report for 1911 and 1912; ‡badministrative report and economic and geological papers.
260 ‡aUrbana, ‡c1917.
300 ‡a160 [20] p. ‡billus.
490 0 ‡aIllinois State Geological Survey. Bulletin ‡vno. 23
500 ‡a"Certain reports in cooperation with U.S. Geological Survey."
505 0 ‡aAdministrative report by F.W. DeWolf.--Mineral statistics for Illinois in 1911 and 1912, by Helen J. Skewes.--Oil and gas in Colchester and Macomb Quadrangles, by Henry Hinds.--Plymouth oil field, by Raymond S. Blatchley.--Geology of La Salle and Hennepin Quadrangles, by G.H. Cady.--Stratigraphy and paleontology of the Alexandrian series in Illinois and Missouri, by T.E. Savage.
538 ‡aMode of access: Internet.
650 0 ‡aGeology ‡zIllinois.
CID ‡a008437406
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