TY  - RPRT
TI  - Maps showing landslides and slopes most susceptible to sliding in parts of the Mars and Valencia 7 1/2-minute quadrangles, Butler County, Pennsylvania
AU  - John S. Pomeroy
PY  - 1977
DO  - 10.3133/ofr77818
UR  - https://pubs.usgs.gov/publication/ofr77818
ID  - ofr77818
ER  -