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008 790508s1910 dcu f001 0 eng
010 _ags 10000499
035 _a(OCoLC)4940821
040 _aDLC
_cICharE
_dDLC
042 _apremarc
043 _an-us-de
_an-us-dc
_an-us-md
_an-us-va
050 0 0 _aQE75
_b.B9 no. 434
100 1 _aMarshall, R. B.
_q(Robert Bradford),
_d1867-1949.
245 1 0 _aResults of spirit leveling in Delaware, District of Columbia, Maryland, and Virginia, 1896 to 1909, inclusive.
_cR.B. Marshall, Chief geographer. Work done in cooperation with the state of Maryland during the entire period and with the state of Virginia in part of 1908.
260 _aWashington,
_bGovt. Print. Off.,
_c1910.
300 _a74 p.
_c24 cm.
490 1 _aU.S. Geological survey. Bulletin
_vno. 434
500 _aIssued also as House doc. no. 1015, 61st Cong., 3d sess.
500 _aIncludes index.
651 0 _aDelaware
_xAltitudes.
651 0 _aWashington (D.C.)
_xAltitudes.
651 0 _aMaryland
_xAltitudes.
651 0 _aVirginia
_xAltitudes.
810 1 _aUnited States.
_bGeological Survey.
_tBulletin ;
_v434.
999 _c24950
_d24950