01013cam a22002651i 4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111042001200132043001200144045000900156050002200165100005200187245025000239260004300489300002800532490004100560500002000601651002600621710004300647810005700690gs 15000377 DLC20260227111317.0790911s1915    dcuf         f001 0 eng    ags 15000377   a(OCoLC)5362032  aDLCcICharEdDLC  apremarc  an-us-mn  aw9x100aQE75b.B9 no. 5601 aMarshall, R. B.q(Robert Bradford),d1867-1949.10aResults of spirit leveling in Minnesota, 1897 to 1914, inclusive /cR.B. Marshall, chief geographer; work done in cooperation with the state of Minnesota from 1909 to 1914, inclusive; George A. Ralph, chief engineer of State Drainage Commission.  aWashington,bGovt. Print. Off.,c1915.  a190 p. :bpl. ;c24 cm.1 aU.S. Geological survey. Bulletin 560  aIncludes index. 0aMinnesotaxAltitudes.1 aMinnesota.bState Drainage Commission.1 aUnited States.bGeological Survey.tBulletin ;v560.