01032cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040002400111050001500135100004800150245015100198260005200349300006100401490005600462504003000518650002200548650003800570700006600608740004000674810006400714gs 28000444 DLC20260227111333.0771202s1928    inua     b    000 0 eng    ags 28000444   a(OCoLC)3460790  aDLCcOTdOCoLCdDLC00aQE661b.C81 aCumings, E. R.q(Edgar Roscoe),d1874-1967.14aThe geology of the Silurian rocks of northern Indiana,cby Edgar R. Cumings and Robert R. Shrock ... Div. of geology ...  Conservation commission.  aIndianapolis,bW. B. Burford Print. Co.,c1928.  a226 p.bincl, ill., tables. diagrs. (part fold.)c23 cm.1 aIndiana. Dept. of Conservation. Publicationvno. 75  aBibliography: p. 194-201. 0aGeologyzIndiana. 0aGeology, StratigraphicySilurian.1 aShrock, Robert R.q(Robert Rakes),d1904-1993,ejoint author.0 aSilurian rocks of northern Indiana.10aIndiana.bDepartment of Conservation.tPublicationvno. 75.