TY  - RPRT
TI  - State coordinates and polyconic maps some notes on the state plane-coordinates systems and their relation to polyconic quadrangle maps
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1949
DO  - 10.3133/cir57
UR  - https://pubs.usgs.gov/publication/cir57
ID  - cir57
ER  -