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List of New Nebulæ and Star-Clusters Seen at the Observatory of Harvard College, 1847-1863. From the Proceedings of the American Academy of Arts and Sciences, Etc

Harvard College Observatory

出版	1863
URL	http://books.google.com.hk/books?id=VHpfQFnglEUC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN