TY  - RPRT
TI  - Airborne Fraunhofer line discriminator (FLD) luminescence imaging systems and its application to exploration problems
AU  - Robert D. Watson
AU  - Arnold F. Theisen
AU  - William R. Hemphill
PY  - 1980
UR  - https://pubs.usgs.gov/publication/70112904
ID  - 70112904
ER  -