TY  - RPRT
TI  - Instructions relating to the work of the United States Geological Survey to take effect May 1, 1903
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1903
DO  - 10.3133/70159137
UR  - https://pubs.usgs.gov/publication/70159137
ID  - 70159137
ER  -