TY  - RPRT
TI  - Historic variation of warm-season rainfall, Southern Colorado Plateau, Southwestern U.S.A.
AU  - R. Hereford
AU  - R. H. Webb
PY  - 1992
DO  - 10.1007/bf00143030
UR  - https://pubs.usgs.gov/publication/70017012
ID  - 70017012
ER  -