International geomagnetic reference field 1980 : charts and grid values /
Saved in:
| Main Author: | |
|---|---|
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
[Reston, Va.?] :
United States Department of the Interior, Geological Survey,
1983.
|
| Series: | Geological Survey circular ;
873. IAGA bulletin ; no. 47. |
| Subjects: | |
| Online Access: | CONNECT |
