01008cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040001900111042001200130050001500142100003500157245006500192260005800257300001800315490007000333500012700403500003900530504004200569650001600611650004200627830007300669gs 44000050 DLC20260227111350.0790612r1944uuuusdua     b   s000 0 eng    ags 44000050   a(OCoLC)5056996  aDLCcTxCMdDLC  apremarc00aQE461b.G91 aGwynne, Charles Sumner,d1885-10aPegmatites in the Beecher Rock basin,cby Charles S. Gwynne.  aVermillion, S.D.,bUniversity of South Dakota,c1944.  a23 p.billus.1 aSouth Dakota Geological Survey. Report of investigations,vno. 48  aAt head of title: State of South Dakota, M. Q. Sharpe, Governor. State Geological Survey, E. P. Rothrock, State Geologist.  aReproduced from type-written copy.  a"Selected bibliography": leaf at end. 0aPegmatites. 0aGeologyzSouth DakotazCuster County. 0aReport of investigations (South Dakota Geological Survey) ;vno. 48.