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1Published 1972Subjects “...Natural resources....”
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3Published 1978Subjects “...Conservation of natural resources....”
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4Published 1975Subjects “...Conservation of natural resources Congresses....”
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11Kieyuku Okinawa no yama, kawa, umi : kankyō tokuhon /消えゆく沖縄の山・川・海 : 環境読本 /Published 1996Subjects “...Natural resources conservation areas Japan Okinawa....”
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17Published 1972SubjectsConference Proceeding Book
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20Published 2000SubjectsBook