TY  - RPRT
TI  - Digital grid of isostatic residual gravity of North America; a digital database
AU  - Robert W. Simpson
AU  - Robert C. Jachens
PY  - 1995
DO  - 10.3133/ofr95238
UR  - https://pubs.usgs.gov/publication/ofr95238
ID  - ofr95238
ER  -