✦ LIBER ✦
International Geomagnetic Reference Fields: DGRF 1965, DGRF 1970, DGRF 1975, and IGRF 1980
- Book ID
- 119700259
- Publisher
- American Geophysical Union
- Year
- 1981
- Tongue
- English
- Weight
- 176 KB
- Volume
- 62
- Category
- Article
- ISSN
- 0096-3941
No coin nor oath required. For personal study only.