Issued 1931- in two parts: Bulletin and Statistiques, in two volumes, one consisting of regular monthly numbers, the other the Compte rendu of the annual sessions of the Comité de l’office.
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Issued 1931- in two parts: Bulletin and Statistiques, in two volumes, one consisting of regular monthly numbers, the other the Compte rendu of the annual sessions of the Comité de l’office.