TY  - RPRT
TI  - Variability of hydrological droughts in the conterminous United States, 1951 through 2014
AU  - Samuel H. Austin
AU  - David M. Wolock
AU  - David L. Nelms
PY  - 2018
DO  - 10.3133/sir20175099
UR  - https://pubs.usgs.gov/publication/sir20175099
ID  - sir20175099
ER  -