TY  - RPRT
TI  - Methods for collecting benthic invertebrate samples as part of the National Water-Quality Assessment Program
AU  - Thomas F. Cuffney
AU  - Martin E. Gurtz
AU  - Michael R. Meador
PY  - 1993
DO  - 10.3133/ofr93406
UR  - https://pubs.usgs.gov/publication/ofr93406
ID  - ofr93406
ER  -