Powell, J. (1975). Agricultural traditions of the Mount Hagen area. University of Papua New Guinea, Dept. of Geography.
Style de citation Chicago (17e éd.)Powell, Jocelyn. Agricultural Traditions of the Mount Hagen Area. [Port Moresby]: University of Papua New Guinea, Dept. of Geography, 1975.
Style de citation MLA (9e éd.)Powell, Jocelyn. Agricultural Traditions of the Mount Hagen Area. University of Papua New Guinea, Dept. of Geography, 1975.
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