TY  - RPRT
TI  - Results of spirit leveling in Ohio, 1898 to 1908, inclusive
AU  - Samuel Stinson Gannett
AU  - David Henry Baldwin
PY  - 1909
DO  - 10.3133/b411
UR  - https://pubs.usgs.gov/publication/b411
ID  - b411
ER  -