Braybrooke, J. C.
Ru River gravel deposits / by J. C. Braybrooke - [Port Moresby] Geological and Volcanological Branch 1968 - 13 leaves map - Note on investigation 68415 .
Gravel--Papua New Guinea--Ru River
Aggregates (Building materials)--Papua New Guinea--Ru River
Ru River gravel deposits / by J. C. Braybrooke - [Port Moresby] Geological and Volcanological Branch 1968 - 13 leaves map - Note on investigation 68415 .
Gravel--Papua New Guinea--Ru River
Aggregates (Building materials)--Papua New Guinea--Ru River