TY  - RPRT
TI  - Results of spirit leveling in Pennsylvania for the years 1899 to 1905, inclusive
AU  - Samuel Stinson Gannett
AU  - David Henry Baldwin
PY  - 1906
DO  - 10.3133/b288
UR  - https://pubs.usgs.gov/publication/b288
ID  - b288
ER  -