TY  - RPRT
TI  - USGS Reference Materials Program: Serving the Needs of the Global Analytical Community
AU  - Ruth E. Wolf
AU  - Stephen A. Wilson
PY  - 2007
DO  - 10.3133/fs20073056
UR  - https://pubs.usgs.gov/publication/fs20073056
ID  - fs20073056
ER  -