00756cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040001900111042001200130050002200142100004900164245010100213260006900314300001800383410004500401500001700446650002100463650001300484999001700497gs 35000087 DLC20260227111339.0790615s1934    nbua         s000 0 eng    ags 35000087   a(OCoLC)5069391  aDLCcTxCMdDLC  apremarc00aQE135b.A43 no. 61 aCondra, Geo. E.q(George Evert),d1869-1958.10aGeological phases of soil erosion investigation and control in Nebraska,cby G. E. Condra. 1934.  a[Lincoln]bPrinted by authority of the state of Nebraska,c1934.  a22 p.billus.20aNebraska Geological SurveytPapervno. 6  aCover title. 0aSoilszNebraska. 0aErosion.  c27175d27175