العنوانAbstract of the paper of the United Nations Educational, Scientific and Cultural Organization
إمكانية الوصولEnglish:A_CONF.184_AB_IGO_11-EN - PDF ; Español:A_CONF.184_AB_IGO_11-ES - PDF ; Français:A_CONF.184_AB_IGO_11-FR - PDF ; Русский:A_CONF.184_AB_IGO_11-RU - PDF ; العربية:A_CONF.184_AB_IGO_11-AR - PDF ; 中文:A_CONF.184_AB_IGO_11-ZH - PDF ;
