00857cam a22002291  4500001001300000003000400013005001700017008004100034010001700075035001900092040001900111042001200130050002200142100005200164245019700216260004300413300002800456490005300484500005100537651002200588999001700610gs 16000597 DLC20260227111320.0791121s1916    dcuf         f001 0 eng    ags 16000597   a(OCoLC)5722669  aDLCcUSlWdDLC  apremarc00aQE75b.B9 no. 6371 aMarshall, R. B.q(Robert Bradford),d1867-1949.10aSpirit leveling in Texas,b1896 to 1915, inclusive,cR. B. Marshall, chief geographer; work done in cooperation with the state of Texas in 1902, 1903, and 1910, and with Harris county in 1915.  aWashington,bGovt. Print. Off.,c1916.  a254 p.bpl.c23 1/2 cm.0 aUnited States. Geological Survey.  Bulletin 637.  aAt head of title:  Department of the Interior. 0aTexasxAltitudes.  c25703d25703