000 01195cam a22002771 4500
001 gs 59000160
003 DLC
005 20260227111408.0
008 780715s1959 dcuabd b f000 0 eng
010 _ags 59000160
035 _a(OCoLC)4055613
040 _aDLC
_cOClU
_dISS
_dOCoLC
_dDLC
042 _apremarc
050 0 0 _aQE75
_b.P9 no. 309
082 _a557.7
086 0 _aI 19.16:309/
100 1 _aHeyl, Allen Van,
_d1918-
245 0 4 _aThe geology of the upper Mississippi Valley zinc-lead distict,
_cby Allen V. Heyl, Jr. [and others] With special sections by Arthur E. Flint. Prepared in cooperation with the Wisconsin Geological and Natural History Survey, the Iowa Geological Survey, and the Illinois State Geological Survey.
260 _aWashington,
_bU.S. Govt. Print. Off.,
_c1959.
300 _ax, 310 p.
_billus., maps (24 fold. 22 col., in portfolio) diagrs., profiles, tables.
_c29 cm.
410 2 0 _aGeological Survey (U.S.).
_tProfessional paper,
_v309
504 _aBibliography: p. 296-303.
650 0 _aGeology
_zMississippi River Valley.
650 0 _aZinc mines and mining
_zMississippi River Valley.
740 0 _aUpper Mississippi Valley zinc-lead district.
999 _c29344
_d29344