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1Książkaod Conroy, John D. (John David), 1938-“…Institute of Applied Social and Economic Research (Papua New Guinea)…”
Wydane 1977
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2KsiążkaWydane 1977“…Institute of Applied Social and Economic Research (Papua New Guinea)…”
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3Książkaod Baxter, P. F.“…Institute of Applied Social and Economic Research (Papua New Guinea)…”
Wydane 1976
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4KsiążkaWydane 1984“…Institute of Applied Social and Economic Research (Papua New Guinea)…”
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5KsiążkaWydane 1979“…Institute of Applied Social and Economic Research (Papua New Guinea)…”
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6KsiążkaWydane 1987“…Institute of Applied Social and Economic Research (Papua New Guinea)…”