TY  - RPRT
TI  - The Viking landing sites: Selection and certification
AU  - H. Masursky
AU  - N.L. Crabill
PY  - 1976
DO  - 10.1126/science.193.4255.809
UR  - https://pubs.usgs.gov/publication/70010943
ID  - 70010943
ER  -