Annals Of The Astronomical Observatory Of Harvard College, Volume 31/fr-ca/annals-of-the-astronomical-observatory-of-harvard-college-volume-31/07F8DDBC-0681-4AB2-B714-7CA8B59BF9F4.html07F8DDBC-0681-4AB2-B714-7CA8B59BF9F4
Annals Of The Astronomical Observatory Of Harvard College, Volume 31