Cocoa Industry Board of Papua New Guinea, Report and Financial Statements 1st October 1978 – 30th September 1979
John Perkins and Trevor Clarke, An Alternative Policy for Cocoa in Papua New Guinea: a discussion paper, Rabaul, Aug 1980
John Perkins and Trevor Clarke, Narapela pasin long ronim bisnis kakau insait long Papua Niugini, Rabaul, Aug 1980 with An Alternative Cocoa Policy for Papua New Guinea
C. Prior, J. O’Donohue, R. Rotscheid & E. Sitapai, Black Pod Canker and Seedling Blight Diseases in Cocoa: an illustrated guide for growers [in English, Tok Pisin and Motu], 1981
P. Bleeker and D.F. Freyne, A Preliminary Inventory of Areas Suitable for Cocoa Production in Papua New Guinea, 1981
P.D. Turner, Cocoa Industry Board, Papua New Guinea, Cocoa Research Centre – Tavilo: research requirements and priorities, Feb 1982, Cocoa Industry Board of PNG
E.S.C. Smith (AES, Keravat), Bibliography of Cocoa in Papua New Guinea, PNG Dept of Primary Industry, Sep 1982
J. Wylik & R. Sims, Commercial Agricultural Production in PNG, n.d., c.1983
[Cocoa Act] Chapter No.388, Cocoa; No.37 of 1981; Cocoa Act 1981, No.1 of 1982 Cocoa Regulation 1982, Cocoa Board of PNG, c. Jan 1983
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