TY  - RPRT
TI  - The optimal sun angle for obtaining photographs of Martian surface features from orbit
AU  - Joseph M. Boyce
AU  - Arthur L. Dial
AU  - Harold Masursky
PY  - 1976
DO  - 10.3133/ofr76624
UR  - https://pubs.usgs.gov/publication/ofr76624
ID  - ofr76624
ER  -