00922cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040004700111042001200158050002100170100004900191245008000240260010300320300005300423490005500476504003100531650004300562650002300605810005200628gs 28000226 DLC20260227111332.0761217s1927    nbua     b   s001 0 eng c  ags 28000226   a(OCoLC)2631680  aU. S. Geol. Survey. Libr.cTxWBdTxWBdDLC  apremarc00aQE135b.A4 no. 11 aCondra, Geo. E.q(George Evert),d1869-1958.14aThe stratigraphy of the Pennsylvanian system in Nebraska,cby G. E. Condra.  a[Lincoln]bPrinted by authority of the state of Nebraska [The University of Nebraska press]c1927.  a291 [1] p. incl. illus., tables, diagrs.c23 cm.1 aNebraska.  Geological survey.  Bulletin I, 2d ser.  aBibliographical footnotes. 0aGeology, StratigraphicyPennsylvanian. 0aGeologyzNebraska.2 aNebraska Geological Survey.tBulletin ;vno. 1.