TY  - RPRT
TI  - Statistical methods in water resources
AU  - Dennis R. Helsel
AU  - Robert M. Hirsch
AU  - Karen R. Ryberg
AU  - Stacey A. Archfield
AU  - Edward J. Gilroy
PY  - 2020
DO  - 10.3133/tm4a3
UR  - https://pubs.usgs.gov/publication/tm4A3
ID  - tm4A3
ER  -