Central Sumatra: soils /
Land Resources Development Centre.
Hansell, John Reder Foy.Transmigration settlements in central Sumatra : identification, evaluation and physical planning.
Surbiton : Land Resources Development Centre, Overseas Development Administration,
1981.
LRS33/INDO/JH/15.
With: Transmigration settlements in central Sumatra. (Land resource study; no. 33).