Kantor Menteri Negara Kependudukan dan Lingkungan Hidup, 1992
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Katrina Brown ... [et al.]
The Global Environment Facility, 1993
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edited by Michael Bowman and Catherine Redgwell
Kluwer Law International, 1996
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R. Mansury, author
Asian-Pasific Tax and Investment Research Centre, 1992
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Dolphin, Warren D., author
McGraw-HIll, 2002
Buku Teks