TY  - RPRT
TI  - Joint patterns in sandstone and quartzose siltstone in the Appalachian basin
AU  - William J. Perry
AU  - G. W. Colton
AU  - Jean D. MacKenzie
PY  - 1981
DO  - 10.3133/ofr81838
UR  - https://pubs.usgs.gov/publication/ofr81838
ID  - ofr81838
ER  -