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The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions http://t.co/Az6aP9s26z
The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions http://t.co/Az6aP9s26z
The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions http://t.co/Az6aP9s26z
The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions - http://t.co/AaiTTbJyIu
The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions http://t.co/5shZ1q8oM2
The Sunspot Catalogues of Carrington, Peters, and de la Rue: Quality Control and Machine-readable Versions. http://t.co/t7QnOnBkQZ