00785cam a2200217   4500001001300000003000400013005001700017008004100034010002200075040003600097050002100133100002200154245008500176260004800261300003300309490006500342504002800407650002500435650002600460810008100486gs 65000359 DLC20260227111417.0690527s1964    kyuab    b    00010 eng c  ags 65000359 //r88  aU.S. Geol. Survey. LibrarydDLC0 aQE115b.K4 no. 910aHelton, Walter L.10aKentucky's rocks and minerals,cby Walter L. Helton. Sketches by Roger B. Potts.0 a[Lexington]bUniversity of Kentucky,c1964.  a55 p.billus., maps.c22 cm.1 aKentucky. Geological Survey. Series X. Special publication 9  aBibliography: p. 53-55. 0aPetrologyzKentucky. 0aMineralogyzKentucky.1 aKentucky.bUniversity.bGeological Survey.tSeries X. Special publicationv9