TY  - BOOK
AU  - Marshall,R.B.
TI  - Results of spirit leveling in North Dakota, 1897 to 1910, inclusive.
T2  - U.S. Geological survey. Bulletin
AV  - QE75 .B9 no. 469
PY  - 1911///
CY  - Washington
PB  - Govt. Print. Off.
KW  - North Dakota
KW  - Altitudes
N1  - Issued also as House doc. no. 1463, 61st Cong., 3d sess; Includes index
ER  -