TY  - RPRT
TI  - Evaluation of a periscopic aircraft sextant as a surveying tool during advanced systems field test 3
AU  - R. L. Sutton
PY  - 1968
DO  - 10.3133/ofr68265
UR  - https://pubs.usgs.gov/publication/ofr68265
ID  - ofr68265
ER  -