TY  - RPRT
TI  - Slate deposits and slate industry of the United States
AU  - T. Nelson Dale
AU  - Edwin C. Eckel
AU  - W. F. Hillebrand
AU  - A. T. Coons
PY  - 1906
DO  - 10.3133/b275
UR  - https://pubs.usgs.gov/publication/b275
ID  - b275
ER  -