TY  - RPRT
TI  - Landslides - Cause and effect
AU  - D. H. Radbruch-Hall
AU  - D. J. Varnes
PY  - 1976
DO  - 10.1007/bf02634797
UR  - https://pubs.usgs.gov/publication/70000763
ID  - 70000763
ER  -