1960, “Qu’est-ce que l’U.R.S.I. ?”, dans la brochure dédiée aux fondateurs de l’U.R.S.I., conférences données dans les locaux du “Institution of Electrical Engineers” à Londres.
Voir aussi: 1979, P. Hontoy, Introduction à la célébration du 60ème anniversaire de la U.R.S.I.
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