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- British Institute of Management, London
- The Institution of Mechanical Engineers, London
- The Institution of Plant Engineers, London
- Institute for Workers' Control, Nottingham
- The Nigerian Society of Engineers, Lagos
- American Management Association/International, New York
- American Society of Engineering Education, Washington
- League for Industrial Democracy, New York
- Ordre des Ingénieurs, Athènes
- Société Hellénique pour la Gestion des Entreprises, Athènes
- Société Ethnographique de Grèce, Athènes