000 00873cam a22002291 4500
001 gs 29000068
003 DLC
005 20260227111333.0
008 820714s1929 ilu 000 0 eng c
010 _ags 29000068
035 _a(OCoLC)8599483
040 _aU. S. Geol. Survey. Libr.
_cGStG
_dIDeKN
_dOCoLC
_dDLC
050 0 0 _aQE105
_b.A3 no.2
100 1 _aRolfe, Deette, 1879-
245 1 4 _aThe Rock River country of northern Illinois,
_cby Deette Rolfe.
260 _aUrbana, Ill.
_a[Springfield
_bJeffersons Printing & Stationery Co.]
_c1929.
300 _a[58], [1] p. incl. front.
_billus., maps.
_c20 cm.
410 2 0 _aIllinois State Geological Survey.
_tEducational series,
_vno. 2
500 _aAt head of title: State of Illinois. Department of Registration and Education.
504 _aBibliography: p. [59]
650 0 _aGeology
_zIllinois
_zRock River Valley.
999 _c26701
_d26701