Field application of the participatory method to maintain the unpaved road with ″Do-nou″ in rural area in Papua New Guinea
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1994 ◽
Vol 88
(2)
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pp. 191-197
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1997 ◽
Vol 2
(6)
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pp. 513-518
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1989 ◽
Vol 83
(3)
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pp. 305-319
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