John Perkins and Trevor Clarke, An Alternative Policy for Cocoa in Papua New Guinea: a discussion paper, Rabaul, Aug 1980 Adicionar à área de transferência AU PMB DOC 538-74 Item Aug 1980 Parte de Papua New Guinea Cocoa Board Publications Perkins, John and Clarke, Trevor
John Perkins and Trevor Clarke, Narapela pasin long ronim bisnis kakau insait long Papua Niugini, Rabaul, Aug 1980 with An Alternative Cocoa Policy for Papua New Guinea Adicionar à área de transferência AU PMB DOC 538-75 Item Aug 1980 Parte de Papua New Guinea Cocoa Board Publications Perkins, John and Clarke, Trevor