TY  - RPRT
TI  - Argon content of the Martian atmosphere at the Viking 1 landing site: Analysis by x-ray fluorescence spectroscopy
AU  - B. C. Clark
AU  - P. Toulmin
AU  - A. K. Baird
AU  - Klaus Keil
AU  - H. J. Rose
PY  - 1976
DO  - 10.1126/science.193.4255.804
UR  - https://pubs.usgs.gov/publication/70011001
ID  - 70011001
ER  -