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RT @josemvaquero: New paper: A Normalized Sunspot-Area Series Starting in 1832: An Update https://t.co/wN4M2gq9lk
RT @josemvaquero: New paper: A Normalized Sunspot-Area Series Starting in 1832: An Update https://t.co/wN4M2gq9lk
New paper: A Normalized Sunspot-Area Series Starting in 1832: An Update https://t.co/wN4M2gq9lk
RT @spaceweather: A Normalized Sunspot-Area Series Starting in 1832: an Update https://t.co/IFuCSswSuZ
"A Normalised Sunspot-Area Series Starting in 1832: an Update." https://t.co/trlMnSu9m6