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You are here: Home / RBINS Publications / Bulletin of the Royal Belgian Institute of Natural Sciences 1949-1971 / Bulletin of the Royal Belgian Institute of Natural Sciences. 1949-1970 / On organic remains in shells of Paleozoic and Mesozoic Cephalopods (Nautiloids and Ammonoids).

Charles Grégoire (1966)

On organic remains in shells of Paleozoic and Mesozoic Cephalopods (Nautiloids and Ammonoids).

Bulletin de l'Institut Royal des Sciences Naturelles de Belgique - Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen, 42(39):1-36.