TY  - RPRT
TI  - Preliminary results from the Viking x-ray fluorescence experiment: The first sample from Chryse Planitia, Mars
AU  - P. Toulmin
AU  - B. C. Clark
AU  - A. K. Baird
AU  - Klaus Keil
AU  - H. J. Rose
PY  - 1976
DO  - 10.1126/science.194.4260.81
UR  - https://pubs.usgs.gov/publication/70011000
ID  - 70011000
ER  -