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1I whakaputaina 1998Ngā marauPukapuka
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2I whakaputaina 2000Ngā marau “...Soil ecology Tropics....”
Pukapuka -
3I whakaputaina 1989Ngā marauPukapuka
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4I whakaputaina 1997Ngā marau “...Forest soils...”
Pukapuka -
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6