TY  - RPRT
TI  - Map of zones where land use can be affected by landsliding, flooding, and undermining, Allegheny County, Pennsylvania
AU  - R. P. Briggs
AU  - W. R. Kohl
PY  - 1975
DO  - 10.3133/mf685d
UR  - https://pubs.usgs.gov/publication/mf685D
ID  - mf685D
ER  -