TY  - RPRT
TI  - A description of colored isostatic gravity maps and a topographic map of the conterminous United States
AU  - R.W. Simpson
AU  - R. W. Saltus
AU  - R.C. Jachens
AU  - R. H. Godson
PY  - 1983
DO  - 10.3133/ofr83884
UR  - https://pubs.usgs.gov/publication/ofr83884
ID  - ofr83884
ER  -