Proceedings of the first congress issued with distinctive titles only: pt. 1, Microbiologie générale, médicale, vétérinaire et agricole; pt. 2, Sérologie et immunité. Protistologie et parasitologie. Démonstrations. Statuts. Nomenclature.
Contributions in various languages.
Conferences for 1930-39 held under the auspices of International Association of Microbiological Societies (called 1930-36, International Society for Microbiology (varies slightly); 1939, International Association of Microbiologists)