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P.E. Harding, A Preliminary Report on the Arabica Coffee Soils of Papua New Guinea, Coffee Industry Research report No.1, PNG Coffee Research Institute, Kainantu, Dec 1984, 70pp.
P.M. Bodman, Quarterly Coffee Report No.14, Goroka, PNG Coffee Industry Board, Jan 1989, 11pp. & appendices.
P.M. Bodman, Quarterly Coffee Report No.15, Goroka, PNG Coffee Industry Board, Apr 1989, 12pp., and appendices, p/c.
P.M. Bodman, Quarterly Coffee Report No.16, Goroka, PNG Coffee Industry Board, Jul 1989, 11pp., & appendices.
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