00907cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111042001200132043001200144045000900156050002200165100005100187245017800238260004300416300002600459490004100485500002000526651002100546810005700567999001700624gs 15000462 DLC20260227111318.0790914s1915    dcua         f001 0 eng    ags 15000462   a(OCoLC)5374678  aDLCcICharEdDLC  apremarc  an-us-ia  aw9x100aQE75b.B9 no. 5691 aMarshall, R. B.q(Robert Bradford),d1867-194910aResults of spirit leveling in Iowa, 1896 to 1913, inclusive /cR.B. Marshall, chief geographer. Work done in cooperation with the State of Iowa from 1907 to 1913, inclusive.  aWashington,bGovt. Print. Off.,c1915.  a126 p.bill.,c24 cm.1 aU.S. Geological survey. Bulletin 569  aIncludes index. 0aIowaxAltitudes.1 aUnited States.bGeological Survey.tBulletin ;v569.  c25533d25533