Papua New Guinea Cocoa Board Publications
Prior, C., O'Donohue, J., Rotscheid, R. and Sitapai, e.
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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