TY  - BOOK
AU  - Marshall,R.B.
TI  - Spirit leveling in New Mexico,: 1902 to 1915, inclusive,
T2  - United States.  Geological Survey.  Bulletin 638
AV  - QE75 .B9 no. 638
PY  - 1916///
CY  - Washington
PB  - Govt. Print. Off.
KW  - New Mexico
KW  - Altitudes
N1  - At head of title:  Department of the Interior
ER  -