Simmons, Robert.
Cocoa marketing margins and the distribution of the bounty to the growers / Robert Simmons and Scott Yarbro. - Port Moresby : Department of Agriculture and Livestock, 1993. - 20 p. - Policy working papers ; no. 4 .
Cocoa trade--Papua New Guinea.
Cocoa--Marketing.
Cocoa marketing margins and the distribution of the bounty to the growers / Robert Simmons and Scott Yarbro. - Port Moresby : Department of Agriculture and Livestock, 1993. - 20 p. - Policy working papers ; no. 4 .
Cocoa trade--Papua New Guinea.
Cocoa--Marketing.