- CollectionDOC 538 - Papua New Guinea Cocoa Board Publications
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- Pièce32 - G. Yong Tan, ‘SG 2’ Cocoa Hybrid, n.d.
- Pièce33 - Statistics on cocoa production, exports, prices and distribution of planting materials, Cocoa Board of PNG, 9 Mar 1990
- Pièce34 - Cocoa Statistics of Papua New Guinea, Rabaul, Cocoa Board of PNG, May 1991
- Pièce35 - Cocoa Statistics of Papua New Guinea, Rabaul, Cocoa Board of PNG, Mar 1993
- Pièce36 - Cocoa Statistics of Papua New Guinea, Rabaul, Cocoa Board of PNG, Feb 1994
- Pièce37 - Cocoa Statistics of Papua New Guinea, Rabaul, Cocoa Board of PNG, Feb 1995
- Pièce38 - Cocoa Statistics of Papua New Guinea, Rabaul, Cocoa Board of PNG, Apr 1996
- Pièce39 - Scott Yarbo & Eric Omuru (Economics Division), Papua New Guinea Cocoa Market Report October – December 1992, Rabaul, Cocoa Board of PNG, bound with Special Feature, J.J. Dennis, G-Y Tan & C. Prior, Vascular-streak dieback disease of cocoa, Rabaul, PNG Cocoa & Coconut Research Institute and Cocoa Quality Improvement Project, CCRI Information Bulletin No.1, Nov 1991.
- Pièce40 - Scott Yarbo & Eric Omuru (Economics Division), Papua New Guinea Cocoa Market Report April – June 1993, Rabaul, Cocoa Board of PNG, bound with Special Feature, Alistair McGregor, Seedling blight in cocoa, PNG Cocoa & Coconut Research Institute, CCRI Information Bulletin No.3, Sep 1991.
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