00743cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111050002200132051002400154100003600178245006000214260004300274300003100317490004100348500002000389650001800409810005700427999001700484gs 14000639 DLC20260227111316.0790905s1914    dcua         f001 0 eng    ags 14000639   a(OCoLC)5340812  aDLCcICharEdDLC00aQE75b.B9 no. 548  aTN263b.W4cCopy 2.1 aWells, Roger Clark,d1877-1944.10aElectric activity in ore deposits /cby Roger C. Wells.  aWashington,bGovt. Print. Off.,c1914.  a78 p. :bdiagrs, ;c24 cm.1 aU.S. Geological survey. Bulletin 548  aIncludes index. 0aOre deposits.1 aUnited States.bGeological Survey.tBulletin ;v548.  c25395d25395