TY  - RPRT
TI  - Twin low-oblique photography and the twinplex plotter
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1952
DO  - 10.3133/cir222
UR  - https://pubs.usgs.gov/publication/cir222
ID  - cir222
ER  -