Photographic map of the normal solar spectrum made with the concave grating by prof. H.A. Rowland, Johns Hopkins University. 2nd series, 1888. (titre original)

inconnu, “Photographic map of the normal solar spectrum made with the concave grating by prof. H.A. Rowland, Johns Hopkins University. 2nd series, 1888. (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 27 avril 2024, https://bibnum.obspm.fr/ark:/11287/FZv3f.