Hugh K. Coulter, Cocoa Stabilisation Scheme 1986, Cocoa Board of PNG, Report No.20, 16 Apr 1986
Hugh K. Coulter (Economist, Cocoa Board of PNG), Brief for Solomon Islands Commodities Board Personnel, Report No.18, 8 Apr 1986
Hugh K. Coulter (Economist), Papua New Guinea Cocoa Statistics, Cocoa Board of PNG, Report No.21, 16 April 1986
Harvest, Vol.9, Nos.3-4, 1983, special issue on Cocoa production
Government of PNG, White Paper on Agriculture: National Policies for the Development of the Agricultural Sub-Sector, Waigani, Sep 1989
G.Y. Tan, Report on the 10th International Cocoa Research Conference, Santo Dominigo, Re[public of Dominicana, 17-23 May, 1987, and the New Cocoa Germplasm introduced from Miami Subtropical Research Station, c. May 1987, CCRI
G. Yong Tan, ‘SG 2’ Cocoa Hybrid, n.d.
G. Yong Tan (Principal Plant Breeder, PNG Cocoa and Coconut Research Institute), Annual Report Plant Breeeding Section, September 1986, Cocoa Board of PNG, Sep 1986, 27pp., bound, with Plant Breeding Working Program for 1986-87
G. Yong Tan (Principal Plant Breeder), ACIAR Project no.8442, Coconut improvement Project. Work programme proposals for coconut breeding and tissue culture, Report No.1, Nov 1986, PNG Cocoa & Coconut Research Institute
G. Anthony, G.Y. Kauzi, D.W. Loh & J.R. Anderson, Returns to Cocoa Research 1965 to 1980 in Papua New Guinea, ACIAR Project Papers No.9, Sep 1988