TY  - RPRT
TI  - The validity of geologic projection, a successful example: the Straight Creek Tunnel pilot bore, Colorado
AU  - Charles Sherwood Robinson
AU  - Fitzhugh T. Lee
PY  - 1965
DO  - 10.3133/ofr65138
UR  - https://pubs.usgs.gov/publication/ofr65138
ID  - ofr65138
ER  -