TY  - RPRT
TI  - A field calibration of the sediment-trapping characteristics of the Helley-Smith bed-load sampler
AU  - William W. Emmett
PY  - 1980
DO  - 10.3133/pp1139
UR  - https://pubs.usgs.gov/publication/pp1139
ID  - pp1139
ER  -