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1.
Essai d'étude statistique des cyrtospirifer du Frasnien de la Belgique Mémoires by
Material type: Article Article; Type of continuing resource: periodical
Publisher: Bruxelles Institut royal des sciences naturelles de Belgique 1959
Availability: Items available for loan: Library of General Geology (1).
2.
Révision du genre gürichella W.Paeckelmann,1913 Mémoires by
Material type: Text Text; Literary form: Not fiction
Publisher: Bruxelles Institut royal des sciences naturelles de Belgique 1957
Availability: Items available for loan: Library of General Geology (1).
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