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Keij, A.J. (1957). Eocene and Oligocene Ostracoda of Belgium. Mémoires de l'Institut Royal des Sciences Naturelles de Belgique. 6(23):1-210.
Keij, A.J. (1957). Eocene and Oligocene Ostracoda of Belgium. Mémoires de l'Institut Royal des Sciences Naturelles de Belgique. 6(23):1-210.