TY  - RPRT
TI  - Guidelines for collecting and processing samples of stream bed sediment for analysis of trace elements and organic contaminants for the National Water-Quality Assessment Program
AU  - Larry R. Shelton
AU  - Paul D. Capel
PY  - 1994
DO  - 10.3133/ofr94458
UR  - https://pubs.usgs.gov/publication/ofr94458
ID  - ofr94458
ER  -