TY  - RPRT
TI  - A nondispersive X-ray spectrometer for lunar and planetary geochemical analysis.
AU  - Metzger, A. E.
AU  - Parker, R. E.
AU  - Trombka, J. I.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19660044404
ID  - 19660044404
ER  -