✦ LIBER ✦

Provisional sun-spot numbers for April to June, 1923

✍ Scribed by Wolfer, A.

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Provisional sun-spot numbers for April t

✍ Wolfer, A. 📂 Article 📅 1924 🏛 American Geophysical Union 🌐 English ⚖ 12 KB

Wolfer provisional sun-spot numbers for

📂 Article 📅 1919 🏛 American Geophysical Union 🌐 English ⚖ 32 KB

Provisional sun-spot numbers for July to

✍ Wolfer, A. 📂 Article 📅 1923 🏛 American Geophysical Union 🌐 English ⚖ 20 KB

Provisional sun-spot numbers for October

✍ Wolfer, A. 📂 Article 📅 1923 🏛 American Geophysical Union 🌐 English ⚖ 21 KB

Provisional sun-spot numbers for January

✍ Wolfer, A. 📂 Article 📅 1922 🏛 American Geophysical Union 🌐 English ⚖ 18 KB

Wolfer provisional sun-spot numbers for

✍ van Dijk, G. 📂 Article 📅 1919 🏛 American Geophysical Union 🌐 English ⚖ 25 KB