Niven, D. (David).
Freight movements derived from Lae and Goroka weighbridge data / D. Niven. - [Lae] : Papua New Guinea University of Technology, 1974. - 9, [29]p. - Occasional research and technical bulletin ; no. R19/74. . - Research and technical report (Papua New Guinea University of Technology) ; R19/74 .
Freight and freightage--Papua New Guinea.
Trucking--Papua New Guinea.
Freight movements derived from Lae and Goroka weighbridge data / D. Niven. - [Lae] : Papua New Guinea University of Technology, 1974. - 9, [29]p. - Occasional research and technical bulletin ; no. R19/74. . - Research and technical report (Papua New Guinea University of Technology) ; R19/74 .
Freight and freightage--Papua New Guinea.
Trucking--Papua New Guinea.