Papers on primary industry commodities /1977 /
Harris, G.T.
Papers on primary industry commodities /1977 / R. McKillop... [et al.]. - [Port Moresby] : University of Papua New Guinea : Dept. of Primary Industry, 1977. - 2v. - History of agriculture discussion paper ; no. 1 & 2. .
Agriculture--Economic aspects--Papua New Guinea.
Farm produce--Papua New Guinea.
Papers on primary industry commodities /1977 / R. McKillop... [et al.]. - [Port Moresby] : University of Papua New Guinea : Dept. of Primary Industry, 1977. - 2v. - History of agriculture discussion paper ; no. 1 & 2. .
Agriculture--Economic aspects--Papua New Guinea.
Farm produce--Papua New Guinea.