World guide to technical information and documentation services = Guide mondini des centres de documentation etd'information techniques. Guide mondini des centres de documentation et d'information techniques - [Paris, 1969] - United Nations. Educational, Scientific and Cultural Organization. [Document] ; SO.68.IV.11AF . - [Document] (Unesco) ; SO.68.IV.11AF .

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Technology -- Information services -- Directories.--Technology -- Information services -- Directories.--Technology -- Information services -- Directories.