TY  - RPRT
TI  - Design and construction of a gamma-ray spectrometer system for determining natural radioelement concentrations in geological samples at the U.S. Geological Survey in Reston, Virginia
AU  - Stephen L. Snyder
AU  - Joseph S. Duval
PY  - 2003
DO  - 10.3133/ofr0329
UR  - https://pubs.usgs.gov/publication/ofr0329
ID  - ofr0329
ER  -