| Online link | http://pubs.usgs.gov/of/1997/ofr-97-0520/ |
|---|---|
| Description | Magnetic anomaly expressed in grids with regular spacing derived from 85 separate surveys and provided in several different formats. |
| Originators | Saltus, Richard W. and Simmons, Gene C. |
| Publication | U.S. Geological Survey Open-File Report 97-520 |
| Metadata | Questions and answers |