Feasibility study for the drainage of the Wahgi Valley swamp : integrated report /
Wilton & Bell, Dobbie & Partners [and] E.I.U. (Aust.) Pty Ltd.
- Port Moresby : Department of Agriculture, Stock & Fisheries, 1972.
- iv, [125 leaves] : ill., maps + 2 fold maps ; 30 cm.
Drainage--Papua New Guinea--Western Highlands Province.
Agricultural engineering--Papua New Guinea--Western Highlands Province.
Drainage--Papua New Guinea--Western Highlands Province.
Agricultural engineering--Papua New Guinea--Western Highlands Province.