| 000 | 00900cam a22002291 4500 | ||
|---|---|---|---|
| 001 | gs 25000068 | ||
| 003 | DLC | ||
| 005 | 20260227111329.0 | ||
| 008 | 830606s1925 dcua b f000 0 eng | ||
| 010 | _ags 25000068 | ||
| 035 | _a(OCoLC)9580315 | ||
| 040 |
_aDLC _cMWalB _dOrPS _dDLC |
||
| 050 | 0 | 0 |
_aQE75 _b.B9 no. 769 |
| 100 | 1 |
_aWilmarth, M. Grace _q(Mary Grace), _d1866-1949, _ecomp. |
|
| 245 | 1 | 4 |
_aThe geologic time classification of the United States Geological survey compared with other classifications, accompanied by the original definitions of era, period and epoch terms. _cA compilation by M. Grace Wimarth. |
| 260 |
_aWashington, _bGovt. print. off., _c1925. |
||
| 300 |
_avi, 138 p. _bpl. (fold. tab.) tables. _c23 cm. |
||
| 490 | 0 |
_aU. S. Geological survey. Bulletin _v769 |
|
| 504 | _aBibliographical references. | ||
| 650 | 0 | _aGeology, Stratigraphic. | |
| 650 | 0 | _aGeological time. | |
| 999 |
_c26364 _d26364 |
||