TY  - RPRT
TI  - Twenty-Second Annual Report of the Director of the United States Geological Survey, 1900-1901: Part I - Director's report and a paper on asphalt and bituminous rock deposits
AU  - Charles D. Walcott
PY  - 1902
DO  - 10.3133/ar22_1
UR  - https://pubs.usgs.gov/publication/ar22_1
ID  - ar22_1
ER  -