https://catalogue-scientifique.canada.ca/record=1212792~S6*frc
Rechercher Commission of the European Communities. Safety and Health Commission for the Mining and Extractive Industries; Rechercher Commission of the European Communities; Rechercher Commission of the European Communities. Organe permanent pour la sécurité et la salubrité dans les mines de houille et les autres industries extractives; Rechercher Commission of the European Communities. Directorate-General for Scientific and Technical Information and Information Management
Commission of the European Communities, Directorate-General 'Scientific and Technical Information and Information Management', 1979
Actes de conférence