Hugh K. Coulter, Cocoa Stabilisation Scheme 1986, Cocoa Board of PNG, Report No.20, 16 Apr 1986
Hugh K. Coulter (Economist), Papua New Guinea Cocoa Statistics, Cocoa Board of PNG, Report No.21, 16 April 1986
Cocoa Research Committee and Queensland Department of Primary Industries, Preliminary Proposals for the PNG Cocoa Quality Improvement Project, Cocoa Board of PNG, Report No.17, April 1986
Brief for the Prime Minister on cocoa & coconut research, prepared for the Prime Minister, The Honourable Paias Wingti, on the occasion of his visit to Tavilo Research Centre on 24th May 1985, Cocoa Board of Papua New Guinea, Report No.22, 19 May 1986
M. Holderness, Project Proposal – Phyophthora Palmivora infection of cocoa roots, Cocoa Board of Papua New Guinea, Aug 1986
Hugh K. Coulter, Cocoa Stabilisation Scheme 1987, Cocoa Board of PNG, Report No.__, 16 Mar 1987
Brief for the Minister on the Cocoa Board and the Cocoa Industry in Papua New Guinea, Rabaul, Cocoa Board of PNG, Jul 1988
Report of the Cocoa Industry Investigating Committee, Sep 1987
Final Draft Cocoa Working Group Report to Cabinet, 30th August 1989
Brief for the Minister for Agriculature and Livestock Honourable Galen Lang on the present state of the cocoa industry, Rabaul, Cocoa Board of PNG, 21 Mar 1990
