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Additional Observations on the Invertebrates (chiefly Ammonites) of the Jurassic and Cretaceous of East Greenland

Alfred G. FischerAndreas VischerHeinrich BütlerLeonard Frank SpathWolf Maync

出版	C.A. Reitzel, 1943
URL	http://books.google.com.hk/books?id=tdzyp1HbgagC&hl=&source=gbs_api