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On the orientation of migrating elvers (Anguilla Vulgaris turt.) in a tidal area
F. Creutzberg
出版J.B. Wolters' Uitgevers-maatschappij n.v., 1961
URLhttp://books.google.com.hk/books?id=UyDImQEACAAJ&hl=&source=gbs_api