Photographic Search for the Minor Planet Sappho […], 14th January 1887, exposure 60 minutes (titre original)

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Roberts, Isaac (1829-1904), “Photographic Search for the Minor Planet Sappho […], 14th January 1887, exposure 60 minutes (titre original),” Bibliothèque numérique - Observatoire de Paris, consulté le 23 novembre 2024, https://bibnum.obspm.fr/ark:/11287/2SBLQ.