Error message

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  • Warning: array_key_exists() expects parameter 2 to be array, null given in dial_widget_pr_publication_action() (line 140 of /var/www/html/drupal-7.54/sites/all/modules/dial/dial_widget/dial_widget_pr/dial_widget_pr.module).

Universal Service : a conceptual approach

Bibliographic reference Cheffert, Jean-Marie. Universal Service : a conceptual approach. In: Beyond Competition: Broadening the Scope of Telecommunications Policy : , VUB Press  : Brussels 2000, p. 157-178
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