Petrology of the Pennsylvania underclays of Illinois, by Ralph E. Grim and Victor T. Allen.

By: Contributor(s): Material type: TextTextSeries: Illinois. State geological survey. Report of investigations ; no. 52Publication details: Urbana, Ill., Printed by authority of the state of Illinois, 1938.Description: 1485-1514p. illus(map)2pl. on ll.,tables(part fold.) 25cmSubject(s): LOC classification:
  • QE105 .A25 no. 52
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cover title.

At head of title: State of Illinois ... Department of registration and education ... Division of the State geological survey ...

Reprinted from the Bulletin, Geological Society of America, vol. 49, 1938.

"Works to which reference is made": p. 1500-1510.

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