✦ LIBER ✦

Provisional sunspot-numbers for January to April, 1940

✍ Scribed by Brunner, W.

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Provisional Sunspot-Numbers for October,

✍ Brunner, W. 📂 Article 📅 1941 🏛 American Geophysical Union 🌐 English ⚖ 36 KB

Provisional sunspot-numbers for July to

✍ Brunner, W. 📂 Article 📅 1940 🏛 American Geophysical Union 🌐 English ⚖ 28 KB

Provisional sunspot-numbers for March to

✍ Brunner, W. 📂 Article 📅 1930 🏛 American Geophysical Union 🌐 English ⚖ 49 KB

Provisional sunspot-numbers for January

✍ Waldmeier, M. 📂 Article 📅 1958 🏛 American Geophysical Union 🌐 English ⚖ 48 KB

Provisional sunspot-numbers for January

✍ Waldmeier, M. 📂 Article 📅 1950 🏛 American Geophysical Union 🌐 English ⚖ 43 KB

Provisional sunspot-numbers for January

✍ Waldmeier, M. 📂 Article 📅 1952 🏛 American Geophysical Union 🌐 English ⚖ 45 KB