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Information transfer
Por International Organization for Standardization, United Nations Educational, Scientific and Cultural Organization
Genève : ISO : UNESCO, 1982
(ISO Standard Handbook ; 1)
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The right to communicate : at what price? Economic constraints to the effective use of telecommunicationsin education, science, culture and in the circulation of information
Por International Telecommunications Union and United Nations Educational, Scientific and Cultural Organization
Paris : ITU : UNESCO, 1995
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