title:Who's Who in International Organizations 1964-65
title:Yearbook of International Organizations 1964-65
10th edition
title:Documents for the Study of International Non-governmental Organizations (series) - No 14
Title: International Congresses 1900 to 1919. Chronological list of 2500 congresses. Cumulative subject index 1681-1919, in English and French.
title:Bibliography of Proceedings of International Meetings Held in 1958
French title: Bibliographie des comptes rendus des réunions internationales tenues en 1958
title:Annual International Congress Calendar
title:International Congress Science Series - No 3
Title: Proceedings of the 3rd Congress of International Congress Organizers and Technicians, Rome 12-15 November 1962: audio-visual equipment, associated exhibitions, public relations
title:La Science des Congrès Internationaux - No 3
Title: Compte rendu du 3e Congrès des organisateurs et techniciens de congrès internationaux, Rome, 12-15 novembre 1962
title:Bibliography of Proceedings of International Meetings Held in 1957
French title: Bibliographie des comptes rendus des réunions internationales tenues en 1957
title:International Initialese: Guide to Initials in Current International Use
French title: Sigles internationaux: répertoire alphabétique des abréviations d'usage courant. Enlarged 2nd edition