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Cocoa Board of Papua New Guinea Inglés
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Tom Leven, (Agronomist, PNG Cocoa and Coconut Research Institute), Progress Report September, 198...
Tom Leven, (Agronomist, PNG Cocoa and Coconut Research Institute), Progress Report September, 1986: Agronomy Section, Cocoa Board of PNG, c.Sep 1986.
Trevor Clarke, Joseph Grows Cocoa, revised by Colin Benton & Jane Belfield (CQIP, Rabaul), dr...
Trevor Clarke, Joseph Grows Cocoa, revised by Colin Benton & Jane Belfield (CQIP, Rabaul), drawings by Blasius Offele, Mar 1993
[Cocoa Act] Chapter No.388, Cocoa; No.37 of 1981; Cocoa Act 1981, No.1 of 1982 Cocoa Regulation 1...
[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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