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Sun-spot Activity During 1920

✍ Scribed by Seth B. Nicholson

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Sun-spot Activity During 1921

✍ Seth B. Nicholson 📂 Article 📅 1922 🏛 University of Chicago Press 🌐 English ⚖ 222 KB

Provisional sun-spot numbers for 1920

✍ Wolfer, A. 📂 Article 📅 1921 🏛 American Geophysical Union 🌐 English ⚖ 30 KB

The Variation in Sun-Spot Activity Durin

✍ Seth B. Nicholson 📂 Article 📅 1919 🏛 University of Chicago Press 🌐 English ⚖ 307 KB

The Sun's Activity, 1890–1920

📂 Article 📅 1922 🏛 Nature Publishing Group 🌐 English ⚖ 313 KB

Wolfer provisional sun-spot numbers for

✍ van Dijk, G. 📂 Article 📅 1920 🏛 American Geophysical Union 🌐 English ⚖ 37 KB

The 4.79 Period of Sun-spot Activity

✍ SCHUSTER, ARTHUR 📂 Article 📅 1908 🏛 Nature Publishing Group 🌐 English ⚖ 158 KB