Researches on Solar Physics. Heliographical Positions and Areas of Sun-Spots Observed with the Kew Photoheliograph during the Years 1862 and 1863. [Abstract] [abstract]

Warren De la Rue, Balfour Stewart, Benjamin Loewy
1867 Proceedings of the Royal Society of London  
fatcat:sahffbapdjdlbbdz3y2zod27eu