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Final Report, Second Expert Consultation on RAMP (Ramp II), Berlin (West), 9-11 June 1982
Unesco. General Information ProgrammeUNISIST (Program)
出版General Information Programme and UNISIST, United Nations Educational, Scientific, and Cultural Organization, 1983
URLhttp://books.google.com.hk/books?id=wKFpDeuPMVYC&hl=&source=gbs_api