✦ LIBER ✦
Circular letter No. 251 to directors of observatories and institutions which have made magnetic registrations during the international polar year 1932-33
✍ Scribed by Bartels, J.; Laursen, V.
- Book ID
- 119721739
- Publisher
- American Geophysical Union
- Year
- 1950
- Tongue
- English
- Weight
- 128 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0148-0227
No coin nor oath required. For personal study only.