TY  - RPRT
TI  - Upgraded gravity anomaly base of the United States
AU  - Gordon R. Keller
AU  - T.G. Hildenbrand
AU  - Robert Kucks
AU  - D. Roman
AU  - A. M. Hittelman
PY  - 2002
DO  - 10.1190/1.1471598
UR  - https://pubs.usgs.gov/publication/70024804
ID  - 70024804
ER  -