TY  - RPRT
TI  - Aeromagnetic map of the Petersburg area, Alaska
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1979
DO  - 10.3133/ofr79832
UR  - https://pubs.usgs.gov/publication/ofr79832
ID  - ofr79832
ER  -