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[27]
International Organization for Standardization ; United Nations Educational, Scientific and Cultural Organization - Information transfer. 2ª ed. Genève : ISO : UNESCO, 1982. 522 p.. ISBN 92-67-10058-0
Texto
[36]
Union international des télécommunications ; United Nations Educational, Scientific and Cultural Organization - The right to communicate : at what price? Economic constraints to the effective use of telecommunicationsin education, science, culture and in the circulation of information. Paris : ITU : UNESCO, 1995. 89 p.
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