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UI - Tesis (Membership)
Moran, Theodore H.
Resources for the Future, 1978
Buku Teks
Bachrawi Sanusi, author
Safin Akwa Muda, 1982
Buku Teks
Bachrawi Sanusi, author
UI-Press, 1984
Buku Teks
Seymour, Ian
St.Martin's Press, 1981
Buku Teks