Tolong jelaskan mengenai Negara-negara anggota dari Kumpulan 15 dalam bahasa melayu

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Reinalda, Bob and Bertjan Verbeek. (1998).  Autonomous Policy Making by International Organizations. London: Routledge. 	10-ISBN 0-415-16486-9/13-ISBN 978-0-415-16486-3; 13-ISBN 978-0-203-45085-7;10-ISBN 0-203-45085-X;   OCLC 39013643