00942cam a22002651i 4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111042001200132043001200144045000900156050001700165100005200182245017100234260004300405300002600448490004100474500006100515500002000576651002300596810005700619gs 11000330 DLC20260227111311.0790529s1911 dcu f001 0 eng  ags 11000330  a(OCoLC)5011901 aDLCcICharEdDLC apremarc an-us-or aw9xl00aGB495.O7bA31 aMarshall, R. B.q(Robert Bradford),d1867-1949.10aResults of spirit leveling in Oregon 1896 to 1910, inclusive /cR.B. Marshall, chief geographer. Work done in cooperation with the state from 1905 to 1910, inclusive. aWashington,bGovt. Print. Off.,c1911. a82 p. :bpl ;c24 cm.1 aU.S. Geological survey. Bulletin 462 aIssued also as House doc. no. 1438, 61st Cong., 3d sess. aIncludes index. 0aOregonxAltitudes.1 aUnited States.bGeological Survey.tBulletin ;v462.