00953cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111042001200132043001200144045000900156050002200165100005100187245015000238260004300388300001900431490004100450500002000491651002900511710006100540810005700601999001700658gs 12000790 DLC20260227111313.0790822s1912    dcu          f001 0 eng    ags 12000790   a(OCoLC)5297763  aDLCcICharEdDLC  apremarc  an-us-pa  aw9x100aQE75b.B9 no. 5151 aMarshall, R. B.q(Robert Bradford),d1867-194910aResults of spirit leveling in Pennsylvania, 1899 to 1911, inclusive.cR. B. Marshall, chief geographer.  Work done in cooperation with the state.  aWashington,bGovt. Print. Off.,c1912.  a164 p.c24 cm.1 aU.S. Geological survey. Bulletin 515  aIncludes index. 0aPennsylvaniaxAltitudes.1 aPennsylvania.bBureau of Topographic and Geologic Survey1 aUnited States.bGeological Survey.tBulletin ;v515.  c25197d25197