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Proceedings of the Academy of Natural Sciences of Philadelphia

出版	Academy of Natural Sciences of Philadelphia, 1892
URL	http://books.google.com.hk/books?id=-MNLAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋"Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794.