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1
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2ā- Muthiah, Annamalai C.Ngā marau “...Fertility, Human Tonga Statistics....”
I whakaputaina 1993
Pukapuka -
3
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4Ngā marau “...Land use Tonga....”
Tuhinga Whakapae Pukapuka -
5I whakaputaina 1996Ngā marau “...Demographic surveys Tonga....”
Pukapuka -
6ā- Meyer, Paul A.Ngā marau “...Natural resources Tonga 'Eua Island....”
I whakaputaina 1974
Tuhinga Whakapae Pukapuka -
7
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9
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10I whakaputaina 1997“...Tonga Census, 1996....”
Pukapuka -
11