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Delfiner og marsvin

Janelle Hatherly

出版	Klematis, 1991
ISBN	87772113919788777211393
URL	http://books.google.com.hk/books?id=WeMUAAAACAAJ&hl=&source=gbs_api

註釋

Describes the physical characteristics, habits, and natural environment of dolphins and porpoises and discusses their evolution and relationship to human beings.