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            1Published 1988“…Asia-Pacific Roundtable…”
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            2Published 1990“…Asia-Pacific Roundtable…”
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            3Published 1994“…Asia-Pacific Roundtable (7th : 1993 : Kuala Lumpur)…”
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            4“…Asia-Pacific Roundtable (6th:1992:Kuala Lumpur, Malaysia)…”