| 000 | 00991cam a22002531 4500 | ||
|---|---|---|---|
| 001 | gs 26000138 | ||
| 003 | DLC | ||
| 005 | 20260227111330.0 | ||
| 008 | 760625s1926 xx 000 0 eng c | ||
| 010 | _ags 26000138 | ||
| 035 | _a(OCoLC)2281936 | ||
| 040 |
_aU.S. Geol. Survey. Library _cTxEU _dDLC |
||
| 042 | _apremarc | ||
| 050 | 0 | 0 |
_aQE662 _b.B4 |
| 100 | 1 |
_aBevan, Arthur Charles, _d1888-1968. |
|
| 245 | 1 | 4 |
_aThe Glenwood beds as a horizon marker at the base of the Platteville formation, _cby Arthur Bevan. Printed by authority of the state of Illinois. |
| 260 |
_aUrbana, Ill., _c1926. |
||
| 300 |
_a13 p. _billus., map., tables. _c25 cm. |
||
| 410 | 2 | 0 |
_aIllinois State Geological Survey _tReport of investigations, _vno. 9 |
| 500 | _aAt head of title: State of Illinois. Department of registration and education. Division of state geological survey. | ||
| 504 | _aBibliographical foot-notes. | ||
| 650 | 0 |
_aGeology, Stratigraphic _yOrdovician. |
|
| 650 | 0 |
_aGeology _zIllinois. |
|
| 999 |
_c26451 _d26451 |
||