00942cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040004700111042001200158050003000170051001600200100004500216245015300261260006000414300006300474490005500537650003700592651002300629650004800652gs 28000376 DLC20260227111333.0790807s1928    kyuab         000 0 eng c  ags 28000376   a(OCoLC)5248974  aLibrary, U. S. Geological SurveycOCldDLC  apremarc00aQE115b.A3 ser. 6, no. 21  aF457.M2bL81 aLobeck, A. K.q(Armin Kohl),d1886-1958.04aThe geology and physiography of the Mammoth Cave national park,cby Armin Kohl Lobeck. Illustrated with thirty-nine photographs, maps, and diagrams.  aFrankfort, Ky.,bThe Kentucky Geological survey,c1928.  a7 p. l., 69 p. incl. front., illus., maps, diagrs.c23 cm.0 aKentucky. Geological survey. Ser. VI. Pamphlet XXI 0aGeologyzKentuckyzMammoth Cave. 0aMammoth Cave (Ky.) 0aPhysical geographyzKentuckyzMammoth Cave.