Ramu, Papua New Guinea : sheet SB/55-5 international index /
compiled by J.H.C.Bain and D.E.Mackenzie
- Canberra: Australian Government Publishing Service, 1975
- 40p.: maps
- 1:250,000 geological series - explanatory notes .
At head of title :Dept. of Minerals and Energy, Bureau ofMineral Resources, Geology and Geophysics, & Dept. of Lands, Surveys and Mines, Papua New Guinea, Geological Survey of Papua New Guinea