TY  - RPRT
TI  - U.S. Geological Survey Standard Reference Sample Project: Performance Evaluation of Analytical Laboratories
AU  - H. Keith Long
AU  - Richard L. Daddow
AU  - Jerry W. Farrar
PY  - 1998
DO  - 10.3133/fs03198
UR  - https://pubs.usgs.gov/publication/fs03198
ID  - fs03198
ER  -