TY  - RPRT
TI  - Some geophysical programs, data bases, and maps from the U.S. Geological Survey, 1971-1989
AU  - Viki Bankey
AU  - W.L. Anderson
PY  - 1989
DO  - 10.3133/ofr89659
UR  - https://pubs.usgs.gov/publication/ofr89659
ID  - ofr89659
ER  -