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'A study of the commercial shell industry in Papua New Guinea since W.W.II with particular reference to village production of trochus and green snail.'
'The effects of industrial development on mangrove forests in the Gulf Province of Papua New Guinea.'
'The fishing industry of Papua New Guinea.'
'The fishing industry of Papua New Guinea.'
Title unknown - not available for copying
Title unknown - not available for copying
'Mangroves in Papua New Guinea.'
'Mangroves in Papua New Guinea.'
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