000 01028cam a22002531 4500
001 gs 41000049
003 DLC
005 20260227111346.0
008 790608r1941uuuuilua b s000 0 eng
010 _ags 41000049
035 _a(OCoLC)5048401
040 _aDLC
_cTxCM
_dDLC
050 0 0 _aQE471
_b.G74
100 1 _aGrim, Ralph E.
_q(Ralph Early),
_d1902-
245 1 0 _aPetrographic and ceramic properties of Pennsylvanian shales of Illinois,
_cby Ralph E. Grim. Printed by authority of the state of Illinois.
260 _aUrbana, Illinois,
_c1941.
300 _a15 p.
_billus.
410 2 0 _aIllinois State Geological Survey
_tReport of investigations
_vno. 72
500 _aAt head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
500 _a"Reprinted from the Journal of the American Ceramic Society, vol. 24, no. 1, pp. 23-28, 1941."
504 _aBibliographical foot-notes.
650 0 _aShale.
740 0 _aPre-Pennsylvanian shales of Illinois.
999 _c27706
_d27706